Malc,
I've sold work before, and it was me that did the contract
I know they are not worth the papaer they are written on, but they are at least an indication of trust.
I'm afraid though that when it was mooted that I should take off a percentage should customers cancel, I also mentioned that they will pick up work as a direct result of taking on the round I sold them, I also built in a guarantee from me that I would not take back any customers whatever the conditions.
This also included a letter explaining all to the customers too
Easy for them to copy out on a photocopier.
The problem with trying to safeguard yourself about cancelations is that it may well be because you have done a job that sucks, have been rude to a customer, customer has died/moved away and so on.
But if you have bought something like 350-400 customers there will be a natural wastage, and they are always replaced by more than you will lose.
your work will increase, not decrease over a 3 month period.
But a contract, oh yes, no question, it means everything is in writing, how much, how many accounts, conditions agreed upon and so on, and get it independantly witnessed too.
Ian