I know George, I only paid $5.70 to send two kits to Michigan, but it did cost me $7.00 to send a single kit to Nevada. I was disgusted by that but the PO does charge by distance when it gets above 13 ounces. And when it gets above 16 ounces (most kits are) you pay for 2 pounds. Bottom line is sending single kits through the mail is not very economical. But you are right, 2 pounds to zone 8 (farthest distance) is $7.50 priority and about $1 cheaper parcel post. NOT $10.