This is a re-post of MillerCat's deal (see next post) but thought it worthy of submitting now Google Checkout offer £10 off £30 spend. The LiteOn drive is now 20x.
To get price £21.21 I added 50x DVD discs (code 3445) at £8.25 to the DVD (£12.98). You then have to add items to take the total up to £30, and order via google-checkout with saver delivery selected (should be 99p with the DVDs mentioned).
Just to make it clear, the £21.21 price is for the drive with 125 blank DVDs, but basically you can get the drive, 50 blank DVDs and then £8 worth of goods of your choice for £21 delivered.