Whether it's a lot or not depends entirely on how much you're making. For someone who has a $500/year side project $288 is half your revenue. For someone who has a $50,000/year side project $288 is trivial. If you're marketing to people who haven't yet launched then most of your customers are in the first group - and that makes your product sound quite expensive.

If I had the need for your product I'd be much more likely to use it if the cost was something like $1/user/month, capped at $30/month.

Secondly, I agree that it's far too much money for a weekender level. Bear in mind that most weekender projects will be using free tiers at various providers. This could easily swamp all other outgoings combined.

If you really do want to capture the weekender market I'd probably suggest cutting the cost to 1/3 of current and billing annually.

It'll be more effective marketing than anything else you could reasonably buy, and unless you have serious architectural/scaling issues shouldn't be too expensive for you.