I concur. One-Time-forever deals result in unhappy customers. They end up with expectation you can't fulfil, which in turn leads to disappointment. It's better

I concur. One-Time-forever deals result in unhappy customers. They end up with expectation you can't fulfil, which in turn leads to disappointment. It's better to have a much tighter description of what you are offering and go from there. Keep expectations -really- low so you can over-deliver.