Alex,
Try calling a few of the local Foreign Auto Parts stores in your area. They may be able to have it done locally for you. Or:
When my car was restored, I took the box of 4 calipers to my local place, S&G
http://www.sgparts.com/ and they took care of it all. They have a place in Toledo, (Holland, near the airport; 419-867-1927). They still do the rebuilding and tell me the price has not changed drastically over the years. Worth a call, and drive.
My calipers all looked like crap; were all mostly seized. I got back 4 calipers that looked like they were
brand new. They've been on the car since. Though this was 10 years ago I thought the price was quite reasonable at $40 per.
Takes less than a week in general, and the only issue time and cost wise will be if your pistons need replacement.