In case anybody comes across this thread after searching for Komputerbay, my experiences with them have been awful. I purchased 8GB of DDR3 laptop memory (i.e 2 * 4GB SODIMMS) from them for £195. After returning three sets of faulty RAM to them over the course of 6 months, I finally asked for a refund. They complied by sending me £20, claiming that this was because the price of memory had gone down since my original purchase. They offered to let me return the money and have another replacement memory kit sent out. The forth and final kit they sent me was 8GB in a kit of 2 * 4GB DIMMs (not SODIMMS). After that, I gave up.
tl:dr edition; avoid Komputerbay.