We always reply within 24-48 hrs max with all possible actions taken on design/html issues. 2-3 days for bigger time consuming items like programming and all.
Normal emails are replied in 12 hrs max.
We request for 50% advance for projects below 300 usd.
For project above 300 usd, we request for 25% advance, 25% after home page design/html approval, 25% after first draft of programming (alpha stage), 25% after final delivery on client server and his approval.
I hope you like our terms