Here's the relevant info contained in an Email message I received from RCI:
"RCI Points Partner Program Update: Effective May 6, 2008
Earlier this year, we rolled out a new value structure to the program to provide you with much more flexibility in the number of RCI Points you exchange and fewer limitations in how you choose to exchange them. However, due to various economic factors, including the rising cost of travel services, we regret that it is necessary for us to scale back on some of that added flexibility in order to continue to offer the RCI Points Partner Program. While the program will continue to remain more flexible and simple than it previously was, the following changes will go into effect on May 6th, 2008:
• Discounts levels will be assigned at the level closest to the cost of the item, without going over. (For example, say you want to purchase round-trip airfare from New York City to Aruba, valued at $340 USD. Under the new structure, you would exchange 35,000 RCI Points for $300 USD in savings on the ticket price.)
• In addition, a minimum of 25,000 RCI Points will be required to exchange for RCI Points Partner transactions.