A website is giving Harry Potter fans the chance to read The Tales of Beedle the Bard, but only if they're 13 or older.
The hand-written book by JK Rowling is one of only seven copies in the world, and was bought by Amazon for £1,950,000.
To be in with a chance to travel to London with a friend and spend a whole weekend pouring over the book, entrants have to answer one of three questions.
But Amazon said it had to set an age limit of 13 or over, because of internet rules in other countries.
So how do YOU feel about younger Potter fans not being able to enter?
Are you disappointed, or do you think it's fair enough?
Unfortunately this topic is now closed but there are Comments pages on other subjects on the main Chat index.
Your comments
"I think it is fair. The book is special and some people younger than 13 could be careless with it!"
Lauren, 12, Lincolnshire, England
"I'm 13 and I think that it's unfair that you have to be over 13 to enter. Let's say I was 12 and I was the biggest Harry Potter fan in the world, I would never get to read the book that's been hand written."
Dylan, 13, Glasgow, Scotland
"In some cases children under 13 are more responsible than some teenagers. It is a great opportunity and many children will be disappointed. I think the American contest system should be changed!"
Olivia, 11, Lancashire, England
"The Harry Potter books are aimed at children of all ages, so why can't the competition be aimed for at ages?"
Jade, 11, Morayshire, Scotland
"I think it is unfair because children as young as 5 read Harry Potter and younger people can't help when they were born."
Fankie, 10, Berkshire, England
"That has got to be the most unfair thing in the history of the universe. I absolutely LOVE the Harry Potter books. I started reading them when I was only six and I have never stopped reading them since!"
Carina, 9, County Durham, England
"I think it's fair. I don't mean to sound all high and pompous but people who grew up with the books should be given priority over those just caught up in the obsession."
Colette, 13, Hertfordshire, England
"I don't think it's fair because I'm a Harry Potter fan, but I'm under age."
Jack, 7, Lancashire, Scotland
"It isn't fair. I'm her number one fan! It's a stupid restriction and being 13 doesn't make u responsible."
Georgia, 10, Banbridge, England
"It's stupid not to let us enter just because of a law in America. I think children of all ages should be able to enter the competition."
Rebecca, 9, Sheffield, England
"As for all this nonsense about the book being ruined or damaged - like I would walk up to the book of my dreams and damage it! If anything, I would be too careful with it!"
Aisha, 11, Perthshire, Scotland
"I have to say that I think it's fair enough and I'm not just saying that because I'm over 13. There are loads of contests that older kids and adults can't enter, yet loads of us are total Potter fanatics! It's fair enough that Amazon can set a limit because they DID pay nearly two million quid for it."
Rachel, 14, Kent, England
"I kinda guess it is fair because lots of competitions are for under 12s and that's not fair for the people over 12 - so I kinda guess it is fair in a weird way."
Natasha, 11, East Sussex, England
"It's not fair. The age limit should be 7+. A web-based copy of this should be available for all under 13s to enjoy."
Sanjeev, 9, Buckinghamshire, England
"I think it's unfair because some younger people know more about Harry Potter than some older people."
Zak, 11, Bradford, England
"I would not mind, but if we got to meet Daniel Radcliffe then I would be sad!"
Beth, 10, Kent, England
"SO sorry JK, I'm not your biggest fan, but if I was I would be so upset. I don't think it's fair."
Amelia, 8, Hampshire, England
"I think that if there are special laws in America it is fair to make it 13+."
Ryan, 11, Newport, Wales
"I am so annoyed that under 13's can't enter. How many under 13's have read Harry Potter books? It's so frustrating."
Lee, 12, Sittingbourne, England
"I think it's not fair because Harry Potter is aimed at younger children anyway."
Saskia, 9, Newport, Wales
"I think the age rule is fair, as young kids wouldn't appreciate it is as much, need supervision and might ruin it."
Caroline, 13, Chatham, England
"Quite a lot of the competitions nowadays are for younger children. Adult HP fans rarely get to enter competitions."
Lily, 13, Cambridge, England
"I've already entered, so I'm okay, and I think the rules are fair enough. It's nothing to do with how big a JKR fan you are, or whether you're stupid or not, or even whether you'd be careful with the book - it's because of internet rules in other countries! It wouldn't be fair if over-11s could enter in this country, but only over-13s could enter in others, would it?"
Madi, 13, Dyffryn, Wales
"I'm upset because I love JK Rowling books and when I heard that there was a competition to read a rare book of hers I was so excited, until I found out I was too young!"
Lauren, 11, Bishop Auckland, England
"They shouldn't do that! I personally think that the older you are, the less interested you become in Harry Potter."
Caitlin, 11, London, England
"I don't think it's fair because there are lots of people who would love to read this book and I LOVE Harry Potter!"
Ella, 9, Essex, England
"Maybe it's too scary for people younger than 13?"
Sam, 14, Wrexham, Wales
"I am upset because I would like to enter the competition."
Kirsten, 9, London, England
"I can enter as I'm nearly 15, but I can see why there is an age limit. It's an incredibly valuable book, and there's only seven of them around! You don't want it getting spoilt, because then no-one could enjoy it."
Sophie, 14, Manchester, England
"I know more than my older brother about magic things, and I want it more than him."
Vilena, 8, Crawley, England
"I don't care what age it is, quite frankly. They can do what they like because it is their competition."
Sophie, 11, Renfrewshire, Scotland
"People who are under 13 aren't idiots! We wouldn't break the book because we're under 13."
James, 11, Surrey, England
"I think that this decision is unbelievable! I have read all the Harry Potter books and now I have no chance to read the final book!"
George, 11, Doncaster, England
"It's so unfair as I am a massive Harry Potter fan and I turn 13 just two days after the competition winner is announced!"
Lucy, 12, Buckinghamshire, England
"It's a shame. I have read all the books and loved them."
Amy, 11, Dumfries, Scotland
"It is totally out of order!!! I love the Harry Potter books and I would do anything to get my hands on a copy like that! It is really unfair that I can't enter because I'm not 13 yet."
Katie, 12, London, England
"It's not fair. JK Rowling is one of the best, if not the best writer ever and just because I'm not old enough I can't enjoy her writing. I would enjoy it just as much as anyone older than me."
Rebekah, 11, Devon, England
"I just turned 13 so that's pretty cool, but I don't really care much for Harry Potter."
Yusef, 13, Buckinghamshire, England
"I'm 12 and I think it's unfair. What's the difference between a 13-year-old and a 12-year-old? I know they have to draw the line somewhere but I think it should be open to over-11s!"
Ella, 12, Brighton, England
"NOOO! Just because they're older doesn't mean they are bigger fans! I think everyone should get a chance. Even if the winner was a three-year-old I would still want them to go!"
James, 11, Surrey, England
"I think it is unfair. I love reading the Harry Potter books. I think it should be changed to 6+."
Luiza, 8, Brighton, England
"I've just turned 13 so it doesn't affect me but I think it's pretty fair. The book is very delicate and must not be damaged."
Faye, 13, Liverpool, England
"I don't think it is fair because lots of people enjoy and read Harry Potter who are under 13."
Eilidh, 8, Edinburgh, Scotland
"I don't think it should be 13+ because loads of kids under that age enjoy and read Harry Potter as well. Whatever reason they have for the 13+, I think they should change it. Give other people a chance."
Mariana, 12, London, England
"I think it's fair enough. It's a rare and fragile book. Also the winner can take a guest, so if a child's parent entered and won, then they could still go!
Ronnie, 13, UK
"I don't mind... I'm 14!"
Louis, 14, London, England