I've got a couple 'bats' that are both high-end- one with iridescent layers, delicate raked-glass string work, a lanyard loop, and acid etching that was $25 US, and another with a very heavy inside-out casing, fritwork, and beads that was $30 direct from the glassblower.
Chillums are easy to drop so IMO a pretty heavy one is desirable if you plan to carry it around with you.