That other site is far more choosy about what they allow to be sold there. There are gated categories in which they do not allow any more sellers. Fees are higher. Used is not abundantly allowed.
The grass is not always greener on the other side, but of course, you can try.
If you go elsewhere, you need to learn how the site works. As for Ebay, had you listed in the fixed price, immediate payment required format, you would not have had that problem. If you had your blocks set up, any bidder with two unpaid item strikes would have been unable to bid. If you opened and closed unpaid item disputes, you would give that buyer a strike and got your fees back.
Many use a buying and a selling id; and block someone if they had a bad experience so they can't do unto you as you have done unto them.
