How much should it cost to replace the rack and pinion on a 1999 Plymouth Voyager?

Just got a call from Meineke where I dropped off my 1998 Plymouth Voyager van because of squeeling noise in steering. Thought it was time to replace the serpentine and probably the tensioner. Instead, the manager called to tell me I was loosing steering fluid because the R & P was shot. The rack and pinion needed to be replaced to the tune of $700.00. Well, I picked up the van for $100.00 (and it even included $50.00 worth of gas!) I told him to refill the steering fluid and call it a day. At this point I'll just keep spare fluid in the van and run it to the ground. I'm in Connecticut, where even the air is expensive. Don't know how this price compares in other areas.