Wanted Salesforce Developer: Resource

I would like an indication of your pricing for salesforce CRM development.

Background: We are an SME software vendor in Southwest London using Salesforce internally for sales and client support. We require assistance in making the software further aligned to our requirements. Our understanding is the development would be a quite short job but would like to find someone of quality since we may have additional requirements after the first phase is completed.

Please respond urgently as we are looking to progress very soon.

Sincerely,

Damian