First:

Then (scroll down):

Then:

Then:

Finally, go over to the left and click Checkout, but make sure the store actually has 200 and 50 of each brick, unlike my example.

I'd like to point out that the above post was created using the Avant-Garde sponsor, Cincinnati Bricks.

That's the problem! They don't have huge amount of quantity's! I need that amount of bricks for under 15 pounds

Then you need to go to a different store - one that does have the amount you need.

That's about 6p or 10 cents per brick, not including shipping. I'll leave it to you to find the right store.

Except that with a set, you can't pick and choose the pieces you need. You're simply stuck with whatever the set includes.

25 cents just for 1 2X4 brick... plus the shipping maybe... i don't know

Dosent lego.com have a "pick a brick" page? I think its way easyer.

Cheap bricks in bulk:

http://www.bricklink.com/store.asp?p=ch … D=13087533
http://www.bricklink.com/store.asp?p=he … D=11493506 (200+ for 0.10)

http://www.bricklink.com/store.asp?p=eh … D=17657153
http://www.bricklink.com/store.asp?p=ja … D=14185343

You just have to look. None of them are in the UK but that doesn't really matter - it just takes a little longer for them to arrive.