5lbs worth on Ebay, apparently.
There's actually lot of listings like that, kinda interesting. I guess they are pulls from recycled PCs or something.

5 lb Bulk Graphics Cards - Radeon R7 450, R5 340x, R7 430, NVS 450, Quadro 600 | eBay
Find many great new & used options and get the best deals for 5 lb Bulk Graphics Cards - Radeon R7 450, R5 340x, R7 430, NVS 450, Quadro 600 at the best online prices at eBay! Free shipping for many products!
www.ebay.ca
There's actually lot of listings like that, kinda interesting. I guess they are pulls from recycled PCs or something.