As I said above, they'll probably fix it and cancel all the orders that were made while it was cheap.
These webby selling places seem to like doing that.
( Noit happy baby orangutan, Wed 15 Oct 2008, 0:27, archived)

There it is
"If an error is discovered in the price of the goods that you have ordered, we will inform you as soon as possible. In the event that you order an item and the price published on the Site is incorrect for any reason, we will contact you to let you know the correct price and ask you whether you still wish us to fulfil your order at this price. We shall be under no obligation to fulfil an order for a product which was advertised at an incorrect price. We shall give you the option of confirming the order at the correct price or if you so choose, to cancel the order altogether. If you cancel and have already paid for the goods in the circumstances described in this clause, we shall refund the full amount in accordance with these Terms."
( Noit happy baby orangutan, Wed 15 Oct 2008, 0:27, archived)

Ah, rats.

( The Gentleman Bastard waxing lyrical. ©, Wed 15 Oct 2008, 0:29, archived)

My money is on it actually being £99.99
but we'll see.
( Noit happy baby orangutan, Wed 15 Oct 2008, 0:33, archived)

SHUT UP WITH YOUR SENSE.

( Esme Weatherwax I swear on my tash it's daycent hash, Wed 15 Oct 2008, 0:27, archived)