Summer gloves, I get from ebay. Typically about $8 a pair. They'll last me a couple of years.

Spring/fall cold season, I use mechanic's gloves or these high-vis gloves: http://a.co/akdOIqH

Winter, I use some bike specific gloves with last 2 fingers joined. They were expensive ($60) but in the winter really good gloves are kind of mandatory.