Thank you, sochummy, for your clear description of what was te proper metods used in such transactions. However:
Section 230 of the Communications Decency Act. For copyright-specific third-party listings, platforms rely on the Digital Millennium Copyright Act (DMCA) Safe Harbors is what protects
ebay, Hip and others. They are not nor can they realistically be responsible for verifying the correctness of every listing in all subject areas.
Your claim of counterfeit is no more strong than the sellers claim of not counterfeit. How
ebay handles such transactions protects all parties of the transaction, seller, buyer and
ebay. And, only
ebay suffers a loss, specifically the fee associated with a sold listing.
Just like drugs, the driving market force are not the sellers buy the many buyers looking for a "deal" on postage. as noted by the US Postal Inspection Service to be sure, only purchase Forever stamps from the US Post Office. While a shipping charge may apply, there is no sales tax.
Be aware tat
ebay IDs can be bought and sold or otherwise transferred. Large feedback for a seller in no way impacts the veracity of the Forever Stamps sold.
Now my question to you, sochummy, is why are you buying Forever Stamps at discounts on ebay and expecting them to be valid? If you want someone to blame, blame the source, as all of the counterfeits are generated in China.