hmmmm! its ebay's "gentle nudging" of its Private Seller base towards the cliff edge. As you say, "What Next".
I think we can all agree on one thing, ebay will NEVER permit Sellers to have a "pleasant selling experience" for anything more than 6-12 months before they come up with another incredulous change and its not one change at a time spread over several months, but many, as in the recent Buyer Protection Fees, Simple Delivery, Payments on Hold and Promote Your Listings (to stand any chance of selling).
Many of these changes to selling are NOT to enhance or make ebay a unique platform to sell on; rather they make changes to keep up with the opposition i.e. Vinted, Amazon and Temu to name but three.
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You need a comma in this sentence since you have two independent clauses.