First, I apologize for bad English in previous post - excited I guess.
In reverse order...
Not really knowing that industry, I kinda' assumed once a truck got to a certain fill, that a few more relatively light times didn't add to cost. (Something like $X a ton per mile or whole trailer/truck for $X per mile.) I also thought it was probably a Kubota-owned subsidiary that did the trucking ('K . Logistics LLC' for instance like other corporations have, Walmart, BMW etc.) I have learned to be suspicious of delivery costs that seem to be fixed at the retail end without a distance calculation, and that are as high as 25% of value of items - ie looks just another fixed markup.
Sm - sounds like I inadvertently pushed a personal button - certainly not intended. I also lived under very strange rules and a stacked deck as both a union and then independent contractor electrician.
I once took an Amtrak trip that bumped into a similar rule. A late train stopped about 20 miles from the destination while a new crew rode rode a rail truck out to relieve. Their trip took more than that 20 minutes (couldn't rail ride while train was in motion), and the existing crew still had responsibility for passengers while they worked as they 'rested'. Very weird, but within the rules.
I guess ultimately I'm very suspicious from my previous parts dealers' cavalier attitude on pricing, as I have a used/out of area tractor and will always be a 'little' customer rather than ever being a 'big spender'.
Overall, these tire/wheel goods prices are great - there's just that freight 'kicker' that I was trying to learn how to avoid. After doing some patching myself, my tire guy tells me mounting the small ones alone is worth $30 each in hand labor (too small for car machine, slow and careful hand work as he is guaranteeing not mess up my tires). These 'goods' prices are very much like getting the wheel and the mounting for free. Still, $75 is real money at my house.
Thanks all!