Certified Comic Shop has these keys for sale! Buy directly from the links below!

Avengers 10 CGC 3.5
$250 plus shipping
https://certifiedcomic.shop/graded-comics/avengers-10-cgc-3-5/

Thor 337 CGC 9.4
$160 plus shipping
https://certifiedcomic.shop/graded-comics/thor-337-cgc-9-4/

You can also send offers through the link or DM him on Instagram.

https://certifiedcomic.shop/shop-contact/