It depends on the number of repairs and what type of repairs deck needed, as refinishing goes it depends on the wood condition and if its worth to refinish... On some, you are better off replacing the decking and the railings.

We do many deck repairs some repairs are minor, some repairs required taking hold of the deck apart to repair, in such cases it is cheaper and wiser to replace the entire sub-frame.

Can you post a few pictures? They usually worth a million words.

trying.