As much as the seller is willing to part with them for. It's going to vary by manufacturer, size (after all, you didn't specify if you were intending to run 255s, 11R 22.5 or 24.5s, 275/70R, 275/80R, 285/80R, etc.). Check the Heavy Truck Trader, Truck Paper, and maybe Heavy Equipment Trader websites, plus I'd recommend you call some truck parts and salvage yards in your area. You might be able to score some for $25/each, or you might get charged $100/each or more.
A semi trailer costs over $100,000.
A semi - or a semi-detached house is not usually sold by the mile!
1. 50
1. 50
yes
299.00 a day?
In semi variable cost :variable cost = change in cost/change in output then with that rate * output = variable cost semi variable cost - variable cost = fixed cost
$21,000 USD in 2012 semi auto $1,200
20,000
$500 to $2500
Depends where you are - you don't give enough info.
Depends on which make, and what version. Typically $400-$600.