Welcome to Treasurenet, best treasure site on the net....
What part of the country do you live in, that also helps to know..
If you just hunting land then you need a good detector and highly advise you get a good pinpointer as well. As far as detectors, that you have to decide, Minelab, Whites, Garrett and Tesoro all make good detectors.... Price will depend on how many " bells and whistles" are on the detector, and if you buy new or used.
What kind of hunting, land or water, if it includes water what kind of water, fresh or salt, it makes a difference. Do you want a screen or no screen, just don't buy one with a screen thinking "it's going to tell me when to dig and when not to dig", screen is just a electronic guess on what is there based on the electricial conductivity of the target.....
If you check the for sale forum here for used detectors, there are usually some good deals there, if you want new there are several dealers here that can give you a good deal as well as sponsors.....
Best thing is to do some research and some reading here, it will help you decide. You can buy a $200 detector and you can buy a $1500 detector, it is up to you and how much time you put in learning the detector as to what you will find and how much you enjoy what you buy...
Good luck, let us know if there is more we can help you with....