There is a Q and A regarding the new "free stamp set" promotion if a customer signs up to be a demonstrator from August 11 through October 11. I just read this:

Q: Does a new recruit receive a free stamp set if she purchases one of the promotional $99 Starter Kits?
A: No. The free set only applies to the Sampler promotion and the purchase of the standard $199 Starter Kit.

What "promotional starter kit"?

Well then… I guess what they have not overtly announced yet is that there’ll be a $99 Starter Kit option? WOW, they had a great response when they did this about 1 1/2 years ago. For $99 YOU can be a demonstrator. Stay tuned and when I hear it confirmed from Stampin’ Up!, I shall post again.

As Pooh would say, "think, think, think….".