I had a Springfield, MO dealer (in February) for a 4100 with loader and turf tires quote me the price of $14,000.
I do not know if that is a good price or not. It doesn't sound too bad, but not great, since I believe at list price the tractor and a loader would come out at about $14,700. I have not yet gotten other quotes since I do not plan to actually purchase the tractor until mid-summer.