Price shown twice

Enter a regular price only, and not a sale price.

There’s no numbers on the sale price section but it shows up anyway. If I put zero on sale price section, the price appear like Gratis!

0 = free. Leave the field blank.

sorry, I’ve tryed but always show the price number. Here you have how appear https://www.incastroworld.com/product/cube-xs/

See tax settings – you have setup a price suffix.