Factory Reject Barbies?

I just ordered what appears to be. a bag of 10 barbie factory reject heads for $11. This is my first time doing these but i’ve always been curious about it, i even saw the LA girl prototype head for sale one time, which would be a holy grail lol. Has anyone ever had any experience with buying these. factory reject doll parts or ever found anything interesting?

I think it would be so cool to open an etsy shop or something just turning these into new dolls. So much better than being in a landfill.