I once bought about $400 of balsa at dealer price to stock up my new workshop after we moved here. I requested primarily medium grade or medium light. 50% of the stuff I got was 6 lb or less.. but low density and crappy instead of contest grade, about the only thing it is good for is building the Kon Tiki II. I had a 1/2a model essentially start cracking apart everywhere. Not worth fixing.. Burns great tho'.