Seems to me 'ole DJ Short had it down. First it was just plain old Mexican weed, seeds, stems, wrapped in colored celophane and $200 a Key. Then, along came Columbian, much stronger, better taste, then Jamacian, then Panama Red. Prices hit $35.00 an oz and they were full ounces. The '70's rolled around and a lota weed was comming from 'Nam and Thailand but some was treated with heavy narcotics and not all natural. Tht seemed to start the chemical addition stage where just about anything could be sprayed on crappy weed to get more $$$$ and get you high one way or another. I'm sure some remember paraquat (sp) being sprayed by the Gubment to waste weed all over the world.
Today it would seem we are getting back to the more natural strains and although the prices are much higher so are wages and everything else. It cost me $22.00 in gas to drive from Boston to San Francisco in 1968 but I was only making $2.00 and hour then too.

Smoke what you like and like what you smoke.
Mark Twain