So, Polygon will have a 30 qwei antispam fee now. I have yet to be charged a drop of dust for minting. I have nothing in my connected wallet to do so. https://cryptoslate.com/polygon-matic-to-raise-gas-fee-to-30-gwei-to-prevent-spam-transactions/
So, it will cost less than like a 1000th of a penny or something like that.
Dont get me wrong, I'd love to have a Wax project, but like you said, whitelisting is not easy and I dont think i have a well enough outlined and planned project to show them yet. If I make a planned out seried ,then yeah. Right now Im not there.