Because the new member pack ofers them a lot benefits for later that would be:
50 TCredits
200 Member Rewards Points
10 Eager Zebra Express "tokens"
PLUS...A FREE BONUS: 30 free entries in the TripleClicks Daily Crown drawing
This is a product it helps them to maintain their EA status with spending this TCredits on double mrp auctions and use this Member Reward poits to buy one TCredit and earn 102 Sales VersaPoints
126 MRP = 1TCredit = 102 SVP
