The 35# Weightmax accurate plus/minus 0.1 oz considered accurate for a postal rating. Can be had for $16 on ebay buy now vs the crazy Amazon price of $48 plus they stated accurate to 0.2 ounce. To go more accurate plus looking like a drug dealer there's the ProScale 600 Luxe, capacity 600grams, accuracy 0.1gram. This another ebay buy now for $13.79, this thru "Old Will Knott Scales".
I use both with great results, i'm happy for the price.
A power cube comes with the Weightmax, the proScale operates off two AA batteries, cheap vs those flat watch batteries.