I prefer to use signs rather than individually tagging all of my work (and then arrange items of the same price together). My favorite way to do this is to print out the price on some cardstock, cut it into a fun shape that works with my table design, and attach it to a clothespin which I can pin to the display near the items it's pricing.
This might not work as well if your prices vary quite a bit for each individual piece, but mine usually fit into one of three or four categories.