Bgvp vg 4 availability

Sorry if this question has been asked, but I noticed that the new bgvp vg 4’s are not available on Amazon anymore. Does anybody know why? About 2 weeks ago or so, they had 20 in stock for every color, so now all 200 or so are gone? Yes, I’m aware you can purchase these elsewhere, but seems to me a little odd about the availability. I hope there are not any q.c. issues with these. Thank you for your time