You can get a Vapordome for $250, but there's really not much point to it. Whether you suck on a whip or right out of a bag, a bag filler still puts out diluted vapor compared to a real direct draw vape. If you want to use a bag filler, then it's best to just hit the bag. It's designed to force hot air through the bowl at a constant rate. A whip vape is a passive system. The hits vary, unlike sucking vapor from a bag, but the better whip hits are richer and stronger than bagged vapor. Most who enjoy the vapor experience end up using a whip vape at least part of the time. That's a big reason that nobody comes out with a bag only vape these days. It's direct draw or dual mode.