I don't know when the next promotion like this will come up. May be another year, but I signed up when they had the deal where if you bring in a bag of groceries, they will wave the sign up fee.
I would ask whoever you talk to there if there is any way at all to wave that initial sign-up fee because it's really going to strap you. A lot of times they will do it because what they really want is that monthly fee that goes along with you signing up to be a member.
Be aware that you have to sign a 2 year contract and let them automatically deduct if from your checking account if you want the lower monthly fee. If you handle it any other way, it will cost you $10 more per month. But, by paying $10 more per month, you can cancel your membership any time. I chose the first option(automatic deductions) because it keeps me motivated to go.
Best of Luck, and let us know what you think! Curves is an AWESOME place to workout! The women in there are REAL people, not size 2 tanned beauties who just want to show off their physique for all the guys(iykwim).