But you'd still be finding money ones if they don't have a money amount in the listing
I think that a way to exclude certain trade categories when you're browsing would be a good idea. Oftentimes when I look for trades I browse the offer category because I want to trade either art or characters. Still, when you search by offer only, you often find characters that are listed as "for offer" but only accept monetary payment. Sifting through these to find the adopts I'm looking for is a pain, and a way to exclude certain categories (such as for currency) would aid in making finding trades smoother.