First of all we have to explain them some advantages of being a WAVE3 member listed below...
1- 5 FREE Monthly TCredits (a $59.40 annual value)
2- 50 FREE Monthly Member Rewards Points
3- Chance to win weekly W3 cash drawings
4- Chance to save money on TripleClicks products which are available at special prices for W3 members
Secondly with those free tcredits they can make bids on auctions and earn at least 5 mrp per bid ( in double mrp auctions 10 mrp per bid ). And when their total mrp reaches to 126 mrp they can buy 1 tcredit on tripleclicks which will give them 102 sales points. And it will help them to reach their monthly goals.
I think if we explain our PSAs these advantages , they would agree on being WAVE3 member...