Is linking to a sale of rp code allowed?

Hey guys On a trip to NYC i bought 25$ redeem code, got back to Europe and found out its only NA server. I posted it for sale on a website and i wanted to know if its allowed to post the link here or i will get suspended from the board? The rules mention no product or account selling, but it really isn't promoting any product, it is just 1 code that i bought by mistake, and i don't even know if it falls under the category of product. Thank you for the help!