: The gold standard for enthusiasts. It is a massive marketplace of independent sellers where you can find almost every piece LEGO has ever made. You can upload "Wanted Lists" from sites like Rebrickable to find sellers who have most of the items you need in one go.
If you want to build up a large "creative bin" without spending a fortune, look for second-hand lots: Buying individual LEGO® pieces - Help Topics best way to buy lego bricks
The best way to buy LEGO bricks depends on whether you need specific pieces for a project or just a large volume of random blocks. : The gold standard for enthusiasts
: The official source for new, current-production pieces. While often more expensive than used parts on BrickLink, it is convenient for bulk orders of brand-new common bricks and includes free shipping on larger orders. If you want to build up a large
When you need exactly three 1x4 dark blue plates and a rare minifigure head, these targeted platforms are your best options: