This is the hardest part of freelancing but here goes...

Since it is already created, you should have some rough idea of how many hours it took to create.  Using your usual hourly rate as a developer/employee as a base, increase that by atleast 30% (for taxes etc, although I would go more, probably double) and see how that number looks.  It might seem too big but it is probably right.  If it seems about right or too small then it is definitely too small.  Also factor in any future support that might be required, and either get an agreement that this is included in the price or that you will charge per hour for fixes, small adjustments.

The reception will probably be that it is too high, but everyone seems to think 'its just a simple website how long could it take.'  By basing your number off what you normally make per hour (albeit doubled or whatever) then you have an easy counterpoint to fall back on in your first freelance negotiation.

A quick google of an average web development freelancer's salary gives me $56,664, so you could also work that to get an hourly fee then adjust based on your location and higher or lower living expenses.

Good luck!

You then should price 5 hour increments, whatever your hourly rate would be. That can be for enhancements, updates, maintenance, etc.   I would say if you are using all the bells and whistles in web development and you optimize the site for tablets or smartphones, take the average hourly rate in this area. Check something like salary.com for a ballpark.

There are some lovely women to cam build a nice, simple website for 300.00 You can get a free one or pay 50-100. There are established companies that really do awesome work and they are higher priced.  For someone just starting out, I wouldn't think you would charge much. I definitely wouldn't pay much from someone that is new to it. Also if I am paying a good fee I better have co plate control over the website. Me and me only.

So honestly, one multi hour appointment should cover it.

I want thank everyone for the comments. I forgot to think about maintenance so I will set up and hourly rate that I can bank for future visits. I am not new to designing web sites I have a masters degree for IIT in Chicago in Computer Science but my work life was in telecommunications. I'm retired now and enjoy doing web sites for clubs and now found a good person to barter with.

I have used responsive design in the web site so you can view it on a computer, tablet or smart phone.

I think $100 is way to low for the work I did and I understand the Escort site that allows one for that cost might be a good way to go but this girl wanted a site that didn't look like a cookie cutter site any other girl has.

Again, I'd like to thank all of you for you time and comments.

When you offer your services, you should agree on the price upfront, not after completion of a project.

You, the service provider in this case, state your price. She, the consumer, either agrees or disagrees to pay the stated price.

Just imagine that you are hiring a contractor to build your house and he decides to price his project after completion of the house.  

First, you already designed the site and now you want to know what to "barter" for with the provider.  Sounds like you are looking for "free" sex.

Second, from information provided in the above thread, a designer makes $25 an hour ($56,000/2200 hours worked in a year).  

Third, you created a nine page Web site, but you need to add maintenance on a monthly basis.

Fourth, you have spent an average of about one per page.  Some pages were easy to create while others may have required a couple of hours.  That information you did not provide.  Therefore, one can surmised you spent nine hours on the project.

Fifth, the number of hours and the hourly rate equates to about $225.  Monthly maintenance should run about $25 a month.  

Sixth, for discussion purpose, let's say the provider requires a donation of 350 apples.  You have provided 225 apples, which means that your barter is 125 additional apples from you for immediate delivery.  At 25 apples a month for maintenance, you should have another barter session in about 14 months, but who's counting.

In short, your hourly rate is $25 with an estimated nine hours.  You might be able to adjust that to perhaps 12 hours for a total of $225 to $300, plus an hour's maintenance per month.  If she wants more maintenance, you might be able to go up to two hours a month.  Any more is not really feasible.

Accept the project as a fun project. Perhaps it'll generate "real" business for you in the future.