[PaulJoslin]

I disagree. I thought it was a clever idea to ask people what they would pay for the service. It's a simple service, pricing it would be hard unless people tell them how much it's worth to them.

The question isn't. 'What do you think this service is worth?' - the question is 'How much would you be willing to pay for this?'.

The key difference being, I may like to use the service if it was $5 a month, but not if it was $50 a month - on the other hand someone else may do thousands of invoices and be happy to pay $100 a month.

The feedback he'll get will let him guage the size of the market, the prices people will be prepared to pay and allow him to offer a reasonable plan. Without this prior research he could over price or under price the product substantially.

If on the other hand, no one gives him any feed back on how much they'd pay - I'd take that as clear sign that either the market isn't there for people willing to pay for this or he's targeting the wrong market with his marketing.