This was £140 in the middle of last month at Maplin, then it went back up to £179, now just £99.99 and you get 3% quidco. Screwfix sell an identical one with a 160Gbl hard drive fitted for £189 making this much cheaper.
They may go out of stock but they'll still take the order and send one when in stock again. Also you can get an additional £7 off using a voucher (they'll e-mail it if you subscribe to their e-mails).
As with most security DVRs you need to get a hard drive, NOT from Maplin though, as you can get a 320Gb PATA drive for £50 at places like scan and ebuyer, while maplin charges £80 for a 250GB one.
Maplin also have z good day & night mini camera on special for £19.99 (product code N08CX).