Well, I don't know about a 319...I have a 301 and love it!! I ended up paying about $120 including everything I bought for it, because she came all by her lonesome in a random box,..no cords, no foot control, no extra feet. A 99 can be all over the map...really good condition, including everything, I wouldn't pay more than $75. They are very available. There are several on the Shopgoodwill.com site for auction right now. Don't get one that needs a knee bar...they are hard to find and expensive. My 99 needs one, so I have decided to put a handcrank on it instead. Just easier, and gives variety to my collection! :-)