So I'm on "Change Now" looking to buy WAX by sending BTC to the address they give me.
Should you buy WAX in ChangeNow?
commonly, the fee is higher.
If you meant this Wax, you may check this information:
https://coinmarketcap.com/currencies/wax/markets/You can choose an option there to buy Wax on one of the exchanges.
There are some exchanges that accept buying coins with credit card.