A spray tan costs between $25.00 to $50.00 for a single spray tan.
The cost of a spray tan at a salon can vary from salon to salon but the most I've paid for a spray tan was $50.00
You can sometimes find online coupons to get a discount on the spray tan at your local salon if your local salon offers coupons.
I found an online coupon on groupon for my local salon and paid $20.00 for the spray tan.
A good spray tan should last 10 to 14 days before you need another one to keep your skin looking tanned.
Be aware that getting too many spray tans too often can be harmful to your skin and may cause skin cancer but you take that risk.
I only get a spray tan once per month which is good enough for me in the summer.