Trading in jailbreak is more balanced than trading in adopt me due to the system in jailbreak measuring the value and if one player's items is too high or low of value, it's restricted to prevent less scams making up for amazing fair trades.
If you trade a 1m vehicle for a different 1m vehicle, they have the same value due to having the same cost, it does not even have to have the same cost, it depends on how rare the item is, how special it is, and if it's a vehicle, the speed, cost, and if it's rare to get, and also how many you trade