Korn Ferry tix one of best value in sports
The best value event in golf, imo, is a 36 hole final qualifier for the US Open. Hard to beat from a valueperspective because its free. You get to follow some players with respectable world rankings for free, up close and personal.
Korn Ferry is a close second. A grounds pass is $10-20 and the golf is high level, especially if you follow the leaders. Parking is usually easy and the crowds are low. Just don't make any critical comments to a fellow bystander because they're probably a parent/coach/gf or former teammate of the player.