Has anyone tried the Trade rules?

Has anyone tried to make heads or tales (pun intended) out of the TNEv: trade
rules?  I have a problem with ANY good bought or sold at a given location
having the same price per ton.  Somehow TL15 computers should cost more per
tyon than rice - and certainly someone should be willing to pay more for the
computers....

Yes, I know this is Xboat.  We're running a campaign set in 1110 using
TNE rules~r.  My gut feel is to scrap them and go with book 2.

					Ted7