Had a great time, would definitely go there again. Tickets were $17 bucks with a two purchase (drinks/food) minimum, we went to the 9 show which was drinks/appetizers only. The 7 shows your able to get there much earlier and eat dinner before/during.
It's a lil more expensive than your typical bar but that was expected since it's a "specialty" place. Dress for guys is polo/button up, either would work as well as "classy" shorts in the summer.
The headliner followed two opening acts, both of which have had Comedy Central and/or talk-show or TV appearances so they weren't random no namers... Weren't big names though obviously. All three entertainers were funny and the party I was with had a blast, would definitely like to return to the Tempe Improv.