>>7055554If you're just looking to buy in bulk, then you may want to look at buying some 1000-piece bags from Amazon. There are multiple sellers for them, and they retail for around 30 dollars. Block Tech sells assorted bricks in multiple varieties. I've only seen them for sale at Big Lots, though. Blokko also has a box of assorted bricks for sale in Five Below stores.
The greatest downside to any of these options is matching colors with Lego. Some may come close, but there can be variance in color between production batches with cheaper brands. Also, quantity does not guarantee variety. Block Tech and Blokko tend to load their block assortments with the cheaper, smaller elements (i.e., mostly 1x1 plates), so the real value of these bulk sets is considerably less than the actual prices.