i believe my lincoln was approx 500 or 525 with tax
it came with the hoses and gauges, all you need is a tank ful of gas
most welding is ok with flux core wire, gas will help out a lot, but its really not required unless you're doing sheetmetal/bodywork, then its almost necessary to prevent warping of the metal
if you're on a real tight budget you could look into getting one in the 100-200 dollar range, they won't be great but if you're just trying to learn and aren't sure if its something you'll be moving forward with then this might be a good practice welder to get the feel of things
i can give you a site or two if you choose to go this route