I paid $340 for a used Fluke 116 multimeter and it paid for itself in one call
Bought it off a retiring tech in Mesa back in April, figured it was overkill for the fridge and dryer work I do. Two weeks later I traced an intermittent short on a dryer board in about 4 minutes that would've taken me an hour with my old cheap meter. Customer was so happy she tipped me $40 and sent me two neighbors. My old $35 meter is still in the truck as a backup, but I reach for the Fluke every single time now. What test gear actually earned its price for you?