Need Houzz feed / marketplace expert + Amazon Marketplace Experience

We are an online only retailer and sell across many channels -- ebay, Amazon, Houzz and via our shopify store. Although we've had many sales on Houzz, we have not managed the feed correctly and need to really optimize the channel.

We need help completely optimizing our Houzz listings and store front on Houzz. On Amazon, we need to create a coupon seen when you click on the box of other sellers. I will have an example to show you -- my competitors are doing it for specific products (it can't just be a percentage off across the board.