For a small payments (< $100) we require 100% initial payment. For bigger sums, we require 50% in advance. We use this rate in small-task based improvements, fixes and additions, which could not exceed several hours in most cases. We could also offer a fixed price quotation, when it comes to a bigger task – full website design/redesign, new module or custom development.
To evaluate a project we need as much details as possible. The more details we have, the more precise quotation you will have.