+1 what Scott said.
If you want good quality light wood, on-line is probably going to be your best bet. I put a bulk order in about once a year and (think) I come out a little ahead over what Micheals or Hobby Lobby craft stores are selling their crappy heavy wood for.
Mostly order the super light stuff too. If I need the odd sheet of hard balsa I'll run down to the craft store and buy a sheet.
And now a thread hi-jack:
I placed an order with National Balsa on Nov. 24.
Just got an email notice that is finally shipped yesterday Dec. 4.
I've ordered from National many times and never had this happen. Shipping was always prompt.
Anybody else had this problem lately?