No, you buy a $15 for $25 credit via a "trade 2 for $50 towards a new release" deal. It was a lot nicer when BBV has $5 that you could do that with, but pickings are slim.
Sidenote: You gotta love the crazy thoughts that must go through the minds of whoever sets BBV's prices.
"Hey, this game sold a lot of copies at $4.99. It must be a smash hit. I'll make it $19.99 right away, and we'll make 4x the money!!!!"
"But, Bob, that game only sold because it was cheap."
"Quiet, you!"