Kellyco.com is a good starting place for NEW prices on machines.I've never bought a new machine tho.Somebody just starting out,I'd recommend buying a used,medium priced machine. Todays cheapy machines are better than the top of the line machines 25 years ago.Check out Tesoro and the Cibola machine would be a good one to start with.
The biggest problem with new folks to the hobby is the expectation of finding something great right off the bat and finding something good on every trip.Just doesn't work that way.Pick your machine,learn that machine,keep trying.
Another thing is figure out what kind of hunting you want to do and RESEARCH.
And as with four wheelin,get permission first.