I thought they all ran several hundred dollars too. I looked at the 1 you're considering and I'm amazed at how inexpensive it is. It looks professional but I don't know enough about them. At what point of gestation do you begin using it Laura or only during whelping? Good luck in your search. I'm thinking of getting it if it's a decent model for that price.
Look further. You'll find the same for under $50 on Ebay. You can bid on some of them.
Laura, I purchased this on Ebay for $40, shipping included. 2013 Fetal Doppler Heart detector Baby Sound Heart Monitor Free GEL 3Mhz probe-1 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251168251317
Thanks everyone for your comments. My hubby ordered the Sonoline B for me on Ebay as a Christmas present.
A nice gift! Have fun with it Laura. Rate it compared to your prior after you use it if you don't mind.