[1123581321]

This would need to be implemented as a $30 membership that gives a $1 discount for every check-in over a 30 day period for the next month's payment, or better yet, $60 with a $2 daily discount because memberships below $30 aren't really enough to run a gym.

It would be better to give credit that can be exchanged for things. Better yet, become the company that sets up turnkey reward programs for active gym members.

[riskish]

or you could overcharge them, say $60/mo, then say to get the 30 back they have to come in daily.

[1123581321]

The problem is at $50/month+ the service expectations become much more expensive to provide -- even though a dedicated member could get it back into the 30s.

Edit: what I mean is that if price ranges from $30-60 the average cost will be a lot nearer that range that's perceived as upscale gym. Whereas ranging from $0-60 would at least appear to be nearer the ordinary $30/month average. It would entirely depend on usage, obviously.