This is an alternative to use with neutral territories. It works well with maps that have economic values printed on the neutrals.
You must be able to occupy the neutral territory with at least one land unit before negotiating with it. You can only negotiate with each territory once per turn. This is done before the “Purchase units” phase.
Roll two dice and consult this chart:
“Face Value” = the economic value printed on the territory. According to the dice roll, the country may refuse to talk to you or may even join your cause for face value with a boxcar roll. So if you were to negotiate for a territory with a value of “4”, and you rolled a “9”, you would have to pay the bank 16 IPCs for the country to join your cause. It would be up to you whether to pay that amount or break off the negotiations until next turn to try for a better result. If you accept the terms, pay the bank, move at least one land unit into the territory and place your flag there.
This also works well if you have fewer players than you need for a full game. Just make the extra nation(s) neutral, and every territory within the nation an independent neutral. Then each individual territory can be negotiated for. (you’d have to adjust your setup for game balance issues of course)