Not many cheap kits around. Look at Brodak, wide assortment.
But from what I've seen of your ability, go straight to plans and cut out your own. An excellent first kit, because of the EXTREMELY detailed instructions, is the original 40" Lazy Bee. The ribs and parts are huge and forgiving to cut out, compared to other designs, useful if you are new to Exacto #11s cutting balsa. Should be able to pickup all the required balsa at Hobby Lobby, and even with today's prices, total amount is very small for that plane.
If interested, go to this site (I love Outerzone!!!), and download the plans and all supplements.
outerzone.co.uk