Interested. Take a look at my gallery, I uploaded two fragments of a short story - still a work in progress, but you can judge my style from it. I have a bit of a weak spot for complex, elegant sentences.
Otherwise, I just wish you best of luck with it, eh?
Hello! I'm currently studying to be a fully-qualified editor (I plan on taking all four exams offered by the Editor's Association of Canada over the next couple of years). I don't have a lot of writing samples online due to the fact that most of my writing projects are long novels that are not finished yet, but you can see some of my short stories and "doodles" here: [link]
Unfortunately, none of the authors I've worked with recently have given me permission to share their work as samples of my editing, but I've had experience with everything from essays to short stories to comic scripts, and I absolutely love working closely back-and-forth with authors until their story is the best it can be. Your price range is perfectly acceptable for such a short project, and we can discuss those details further in private. It shouldn't take me long at all to edit 500 words, I'm online every day, multiple times a day, with the exception of Saturdays, but since you need it done by the end of the week, that shouldn't be an issue. I am very good about documenting all changes I make, and always provide detailed feedback and multiple options (when possible) on any changes that are more than simple spelling/grammar fixes, will point out frequently made technical errors, and am very good at picking up on plot holes, inconsistencies, and other miscellaneous continuity issues.
I will gladly proff read your work ^^ i am majoring in english right now and i got above average on every standardized test given in the US in the english section. i will gladly read and report back to you with the errors or any sugested changes. ^^