p90x 13 dvds VS p90x 17 dvds

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proudmommy1003
proudmommy1003 Posts: 329 Member
edited January 6 in Fitness and Exercise
I'm supposed to meet somebody today to buy a P90x workout set. he told me he has two different sets, one that has 13 dvds, and other that has 17 dvs.

Can someone tell me what is the difference? Thanks in advance
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