Hi, I was wondering what's the normal price for an additional copy of a system, in proportion to the price of a system developed from scratch, in the following situations:

1. The client who payed for the original development and requires another copy for, say, another store.
2. Some other client to whom I just sell an unmodified copy of the system.

I realize that the original price might be a bit high, specially for someone who's already payed for the development of the product, on the other hand the price of a similar off the shelf product seems too low, then again it's not like it's as useful, since they would have gotten that in the first place. Any comments would be appreciated.