Quote Originally Posted by M-bot View Post
You can get huge numbers of every different brick available on Bricklink.com. I've built whole sets (using various online instructions) by getting the bricks piecemeal from Bricklink sellers and saved hundreds of dollars from aftermarket prices on the sets. Bricklink can get you the pieces way cheaper than buying multiple sets at retail prices, and you can just get the pieces you need, rather than some pieces you need and a whole lot you don't. The Bricklink website is not a particularly user friendly interface, but you can get the hang of it after a while.
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Can you recommend any particular Bricklink sellers who have a good stock of bricks? I've never been able to find a single seller with enough of what I want to justify the postage.

One of the cheapest ways to obtain bricks if you have the spare time is through garage sales or better still, getting colleagues to gift you their kid's unwanted lego.