Guys you're gonna get how much money you want in this way for your deliveries.

Firstly get a contract from any company and attach the trailer to your truck. 
Save the game. And then go in this way-
My Documents/18 WoS American Long Haul/Save/game.sii (It may be a RAR file, open 
it with MS-WORD). And Then SEARCH FOR THESE LINES-


source_city: "@@ui_XXXXXXXX@@" (XXXXXXXXXXXXXX would be your origin city and down 
also XXXXXXXXX would be your target city,also company,reward)
target_city: "@@ui_XXXXXXXX@@"
cargo: "@@XXXXXXX@@"
target_placement: (&c69aa630, &416eeef6, &467622be) (&bf7b4bec; 0, &3e436360, 0)
source_company: company.volatile.XXXXXXXX
target_company: company.volatile.XXXXXXXX
reward: XXXXXXXXX
over_weight: X
timed: X
time_limit: 0
fragility: 0
}


Now change only the no. in front of reward to how much amount you want for the delivery.

NOTE: After doing this when the game will be loading at first the game may become 
unresponsive, end it by pressing ALT+F4 and then restart the game again 
AND THE ENJOYYYYYYY!!!!!!!!!!!!!!