I called to cancel when the fee went up to $150, but they sent me vouchers equalling $100, to send in over the year. One for $10, one for $20, one for $30, and one for $40. You just need to send in a copy of a monthly bill - I sent a cable bill, received the first rebate in 3 weeks.
I have also saved a lot with the Toys R Us GC, Hollywood Video, Blockbuster, Outback, etc. If you need Park Hopper Plus tickets, the prices seem to be very competitive, I can't get them any cheaper, and I belong to The Disney Club, and a Disney Vacation Club member.