We charge about £1000-1500 a day (~$2700), depending on job (PMs are supposed to be worth more than the programmers, although we actually design everything too - unlike elsewhere). Say it takes you about 4 days all in. So charge about £3k (bit of a steal) and negotiate from there. One of our customers employed someone who earned about £400 a day (6 days a week) as an adviser programmer (cheap at half the price he used to laugh into our not-laughing faces). Didn't do much (we did most of the work), but now and again he would trump up some VB program he made in his spare time and charge our customer about £20k a throw. How we all laughed (I don't actually *earn* £1500 a day, I just make it for the company....)
Oh, and I would really charge about £25 a day. So 4 days gives you a nice round £100, and no-one feels ripped off. Plus, technically, you get to put something on your CV. And remember most of the time you rarely get software that fits your needs exactly off the shelf, so he will probably be alright spending a little more for a bespoke system.
Heh, once me and a mate (when we were 18) went to Liverpool and stayed with this rich accountant friend so we could write a stock control program for this really rough client who ran this rough as hell pub (10p a pint for us though
). On a PCW (old crap PC). Think we charged him £50 in the end, and sweated blood to get that finished (between the mists of alcohol 99% of the time). Looked at the code later (when sober about 6 months later) and realised that it would go wrong (although really stealthly) after about 50 items were stored on it. Doh. Thought he would kill us when he found out, but luckily he was chucked inside for a few years due to cock ups in his accounting and stock control
I saw the pub again a couple of years ago on TV on this "Cops" type ripoff where we travelled with the armed response police in really troubled areas (machine gun carrying coppers). Oh yes, there it was, just the same as a decade or so earlier.
Heh, it was so rough that the winner of the regional Karioke contest there basically got up and just stood there swearing for 5 minutes (no singing, just swearing). Got to laugh
Cheers
Ps. Connect it into GPS code and would be well cool
I am 99% probably lying in bed right now... so don't blame me for crappy typing