Rough guess - from scratch (mounting dish, running cables - everything involved start to finish) I would charge (guessing) $100-$150 in your case.
Joe Trunkslammer will probably charge much less.
Errrrr, i reread your message and you said all you want is someone to check the
installation.
$50 cash
If you're really stuck I'll be in Westborough from 21-24 May, but I'd prefer you to find a local.