Zumba send me offers all the time, after going into their Internet site, and opting in for emails.
I pay between $1 and $5, with free shipping. I have around 20 now.
Always check sale or clearance. Wait for a $10 off any order/free shipping email. It comes within a week, and I can save $10 to $15 on it.
Zumba have never made money from this savvy shopper.
Will add links and more photos when I leave the gym.