on $10/day max spend you'll get 1-2 people that will visit the page, and you can put a "coming soon, leave an email and we'll let you know" then you can email them when it is deployed as well to recoup the adspend. If they're looking for a feature you don't have they're not really your customer today anyway. If they're looking for a feature that doesn't exist anywhere then they have no choice but to wait for it to be built.