Software/Service Selling Q's

[BillBoeBaggins]

First.
I developed a "report center" app for a client. I want to to tweak it to be more customizable and then graft it to fit new clients data without rebuilding the wheel. So, do I sell them the "report center" as software and then charge for the time of grafting it to fit their data or... do I just rate the "report center" as X number of hours of work, then charge for the grafting portion seperately?

Second.
What if anything tax related do I need to provide to my client?
Nothing has been asked for yet, but I want to be prepared.

Third.
Any help appreciated.

[mendhak]

(Moving to Gen Dev!)

First. What did they ask you for? Would they have wanted the tweak as part of the agreement?

Second.

Third.

[BillBoeBaggins]

The product I already developed won't be tweaked.
I just want to re-use it as a 95% done template for other potential clients. Simply changing certain parts of it to fit each individual client without rebuilding from scratch. So do I have to (or should I) sell it as a piece of software or rate it as X billable hours? Did that make any sense?
Thanks!

[Nightwalker83]

I personally think that you should rate it as x billable hours because then the client would know what to expect and what the cost is likely to be.