Cheapest 2 GB Kit i've seen - not the greatest timings (CL5) but a BARGAIN price.
This is NOT compatible with a DDR or DDR3 motherboard.
Jakg, you might want to edit the title again. I've just noticed a workaround to the £7.45+ vat courior postage. If you add a cheap item, for instance the 1p AAA alkaline batteries, a RoyalMail postage option appears in your basket.
2GB Ram + 1 pack AAA alkalines, royalmail delivery at £5.27. Total is £22.85 delivered.