My brother and I have built a tool aimed at email marketers, allowing them to create images with merge tag information on top.
We are at $0 and now know why you should start marketing on day 1, this marketing stuff is hard!
We have a solid MVP and there are so many possibilities to improve / expand the target market.
Future versions could show a retailers best selling product and have the image dynamically change to 'low in stock', 'sold out' etc. If a retailer has multiple stores, we could show information specific to the closest store to you.
We want to get some customers and let them help guide the roadmap.