I bought the L-Max at TRU with the friends and family coupon combined with the $5 off $25 coupon. Total cost was $75. I am hoping someone beats that price, but if not I will be happy with what I paid.
Looks like TRU on line dropped the price to $89.99 which is the same price K-Mart has it on sale for this week.
Also, I believe all Leapster games are compatible with the L-Max. The reverse is also true however you may lose some features of the game that are only able to work when connected to the TV.