Thanks to all who posted.
A summary for anyone who may be curious:
Several gun stores charge $35 per item transferred, plus the additional (required) background check fee ($10) per transaction. Some charge a bit more (or less) for transfers, and some offer a reduced transfer fee for additional items on a single transaction.
From my conversation with them today, A Cut Above Pawn charges $25 for the first item transferred (including background check), and $15 for each additional item per transaction. (Equivalent to $15 per item transferred, plus $10 background check per transaction.)
The difference can add up when doing multiple transfers on a single transaction.
Pat at ORL has been great (and competitively priced - including multiple transfers per transaction) for me in the past. Don't hesitate to use him. He's just a bit farther out than works for me right now.