Snowboard sizing and bindings?

Im 12 years old and i need a real snowboard i d prefer one that is $120 to $150 do you know any sites that have bords that cheap and im also looking for some bindings that dont have the calf piece on them like the ones you can rent from sevensprings in somerset PA so if you find any websites that sell the ones that dont have the ones with no calf piece that you just snap in and go that would be great thanx