Just bought some hardwood from a lumber yard, all 1"x10' pieces with various widths 6-11" wide. Ordered a couple of 8/4 boards, also 10', same hardwood. Price of 8/4 was almost twice the price of 4/4 per board foot. I thought buying by board foot was an equalizer, only paying for how many cubic inches/feet of lumber you buy. Didn't realize thicker lumber priced higher per board foot until after I ordered and it was delivered. Is this normally the way wood is priced at lumber yards? Tx.