Need assistance

Anyone out there got an eBay, Mercari, or Whatnot account or all three? I’m trying to buy some Disney infinity stuff for my little sibling so they experience what’s it like to enjoy good games and to add for a new collection I’m building . The things I’m looking for are: Vision, Ultron, Ultimate falcon power disc, Hawkeye, marvel battlegrounds play set, symbiote spider-man and reg spidey, and ultimate falcon costume disc. If anyone can reach out please let me know