When I bought my recent kit the low prices offset the postage and still worked out cheaper than the other sites I checked.
As always, shop around for price but Scan's service is excellent. They keep you updated via text message and you get a one hour delivery slot from the courier.

have had a brief look at scan's site, looks like prices in places will be cheaper on there so will give it a proper look at some point. Wont be able to this evening as i am off out on a date and wont have enough time on lunch to go through the whole list as generally do a working lunch.