I would not vote for you to purchase a bike sight unseen. Having fiddled with motorcycles off and on for 40 years, I can assure you the best bet would be to search Craigs list etc within a 200 mile radius of where you live.
Ask someone you trust (that knows about bikes) to go with you and look at whatever bike you might be interested in.
This is a link I use often. You can put in your zip code,a radius of miles and what kind of item you are looking for. The search page will show you everything on the various craigs list locations that fit your inquiry.
Be patient, ask for one of the good people on this forum to help you check it out before handing over your hard earned cash. If I were within a hundred miles of you, I would be glad to assist with you getting something safe and mechanically sound.
Good luck and keep us posted