Syn posted this link for affordable gypsy jazz guitars in another topic on Gypsy jazz http://www.djangobooks.com/index.php?app=ecom&ns=catshow&ref=asian-made-guitars&sid=182a9c776m8650l52wpqh89z15ckn98f
Also if you’re interested in Learning gypsy jazz check out Robin Nolan. He has a YouTube channel called gypsy jazz secrets and he is a great teacher!
Also don’t forget the pick. That’s also pretty important. Personally I use Wegen twins 3.5 mm when I play gypsy jazz.