My "smoking buddy" from college has been in Portland for about 5 years now and the deals he's told me about since legalization are just ridiculous. $80/oz for first-time customers. Regular deals at $5/g or $10 for an eighth. It was even crazier deals before the state started collecting tax on it.
For comparison, in the Midwest USA an ounce can be had for ~$250 and smaller quantities are typically between $10-$20/g, depending on quality.
Quality is on par with what's available on the street in the Midwest which, from my understanding, is generally being exported from Colorado and California.