Additionally, there are a wide variety of different types of marijuana.
If you like the marijuana from the old days, or something similar to that, you can get that, too.
In my state, which has legal weed, you can get 1/8 of high THC - 31% - for $35. That's not a particularly low price for an 1/8, but maybe 15 years ago that price might have been $60, illegally, and it probably wasn't 31%.
But a great thing is that some sellers do have lower THC varieties for sale, and they charge a price based on the amount of THC in them. I've bought an ounce for something like $60/$80 and it was supposedly 5% THC and 10% CBD. So, the old fashioned THC numbers are still available, with the high CBD, at really good prices.
And the whole argument "high THC just means you can smoke less and get just as high, the same amount will last longer" is true. Don't pack a big bowl with 31% THC and smoke the whole thing by yourself.