I started asking about postal scales in someone elses thread(sorry) I asked about one that went up to 75lbs. and some thought that was to big.

I ended up buying one that goes up to 55LBS for 24.99 shipped on ebay.
Model: # 4189
Max weight capacity 55Lb
• Sensitivity: 0.2oz
• Easy button: on/Tare, Off
• Large LCD Display
• Measuring units: Pounds / Ounces, Kilograms / Grams.
• Fold-up stand to weigh oversize envelopes and tubes
• Auto Off feature to save battery
• 1 9Volt batteries included/ 9V A/C adaptor included
•Dimensions (WxDxH): 8.0" x 2.75" x 8.0"
• Lifetime warranty



Now maybe I'll get in the habit of weighing my blanks and recording it on the bag.