Anything, a machine, hunting equipment, a car, or a house is only worth what the Buyer is willing to pay. Before I bought my Van Norman I answered several Craigslist ads and in a nice way I told the seller that "to me the mill is only worth this much". Several months after I got my VN I received 2 calls from sellers asking if I still wanted their mill. One was a Bridgeport and the other was an Wells Index.
Don't worry about what you paid, be happy that you have a pretty good mill and know that it works. Go ahead and start making chips, have fun and be safe.