Now on NFTify, you can set up Fiat Payment when creating your sell orders by following the steps below:
Step 1: On your Store Admin site, click on Sell Order tab on the left menu, then click on Create Order button.
Step 2: On Create Sell Order page, you can see Fiat Payment field, then switch button to ON.
Note: Fiat Payment feature can only be used with MATIC token on Polygon stores.
Please find out more about how to buy NFTs with fiat here.