Florida is pretty tight and the risk vs reward is pretty high. $100 is not bad if you get some high grade. MMJ all started in California 20 years ago and you are still looking at $80-100 1/4 these days for solid organic tested bud. Of course you can go cheaper, but who knows what mold is on it as well as what chemicals were used.
I look forward to legalization and tight controls just to protect the end user.