Here's the price list, Sharron. The difference between Lite and Pro level pertains to whether you want to accept credit cards. Unless you want to be restricted to a simple solution like PayPal, with which non-members or people using an email address that PayPal doesn't recognize can pay with a credit card, it's probably worth the extra money to go with the Pro version. Setting up a site to accept credit cards is a pain in the rear, as is getting a merchant account and transaction gateway.

http://www.reservier.com/Products/Desk/Pricing.aspx

There's a link in the right column to their credit card rates. You might want to ask specifically about their monthly minimum and monthly fees, since it's likely that you'll have some off-season months with no rentals As I recall, you're in the N. GA mountains, right? If your area is like Bryson City, NC, you probably will get very few bookings between the end of leaf season (mid-Oct.) and Memorial Day, so be sure to factor that in when setting your rates. July and August are the busiest season in Bryson City, especially mid- to late-August, when people are trying to squeeze in vacations before the kids start school. (Can you tell I spent many years doing advertising for Nantahala Outdoor Center and Endless River Adventures?). However, I did notice that the site below designates Thanksgiving and Christmas has high season--rather a surprise because when I lived there in the late -80s, the place was dead, dead, dead around the holidays.

http://www.watershedcabins.com/reservations.phtml

A good series of articles:

http://www.reservier.com/Owners/Owners.aspx