You'll have a hard time finding the VFC as it has been out of production for awhile now. That having been said, if there was one for sale I would not expect to pay any less than $2000 for it, if that. The performance on the VFC is not staggering - it is more of a collector's piece than a skirmishable weapon.
You may want to consider the release by Socom Gear. It's new and still in production, and in general Socom Gear (and parent company Madbull) have released products of decent quality.