Yes, you can. 125s are common. That's not a great price, but not bad. There are some others on eBay for $60 right now, but they are in Topeka, KS.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...item=7307021437
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...item=7307021890
With all of these Leslies, including the one you linked to, there is no top rotor, which is a big part of the sound. They just have a bottom rotor.