I would def say Pieds/Lessers/Pastels/Bumblebees would be the easy/good way for mid range.

Who doesnt love a pied

Who doesnt love pastel pieds!

who doesnt love Blue eyed Lucys

and who doesnt love bumblee/lesserbees/queenbee's/killerbees!

all of which snakes sell for less then 600-700$ (most cases) and can produce very nice clutches (and other then pied to x ***) you wont get to many normals! without getting good Het/Duel hets!