VERY nice and it looks to be in great shape! Have a look in the bobbin compartment and see if the shuttle (bullet shaped device) is in there and if there is a spindle bobbin inside it. If you've got both of those, it looks like you're ready to thread it and put it to work! I love my antique treadle and recently acquired two hand cranks and will never go back to a modern machine.
Prices on treadles vary greatly. On average for a fully functional treadle, you could realistically get about $200 on Craigslist.
If you've got the shuttle there, we can sort out how to thread that and get it running. If not, we can find one online pretty easily.
Treadle to the metal!!!!!