Portfolio and landing pages look good. Personally, I wouldn't use my landing pages to link to 3rd party sales platforms and drive commissions to them on sales that their traffic wasnt the procuring cause of. I'd try to have everything done direct and use a low fee escrow service for handling the payment and transaction. You redirect to 3rd party sites before you even get to anything allowing them to work directly with you.
Also, I wouldn't put GoDaddy appraisals on my pages unless you are fine with limiting your value/pricing by flawed automated appraisals