Proof reading for marketing presentation.

Num. of words: 763
Industry: Internet/Software
Topic: software development
Tone: Formal/Professional
Extensive research needed: no
Extra notes: We have already written marketing presentation+page for the website and would like to proof read that by native English speaker. Must be British.
Pretty urgent so please specify how much it would cost and when can you do that.
Word count says
1)216 words and 1280 characters
2)547 words and 3147 characters

Thank you in advance.