Explaining the store closure sale, Deloitte said: "Christmas is clearly the busiest time of the year for retailers and it is prudent to do all we can to sell existing stock."
Several shoppers have contacted the BBC to say that the discounts on offer were no different to those introduced last week, and said they were angry after queuing to get into stores to snap up bargains.
However a spokesperson for the administrators said that larger price reductions had been applied to some items, while more products were now included in the sale.
Nick Hood from the business rescue experts Begbies Traynor said it was the beginning of the end for Woolworths.
"This has been a failing brand for a long time," he said.
"It just never kept pace with the change in the High Street, its core DVD and CD business has been taken away by the online trade."
"It's been very, very difficult - it just hasn't been as fleet footed as many of its rivals."
Deloitte had held talks to sell the business as a going concern to potential buyers including former Woolworths chief executive Sir Geoff Mulcahy and Dragons' Den star Theo Paphitis, but no deals could be reached.
To have worked there for 10 to 15 years is not uncommon
Shopworkers' union Usdaw said the latest developments at Woolworths were "absolutely devastating" for its members.
"We have now gone from the business going into administration and staff believing they had got jobs safe up to Christmas to now being in a closing-down sale, which effectively means they are under threat of redundancy," national officer John Gorle told the BBC.
He said that Woolworth's still had a future, but conceded it was a "desperate situation".
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