denisl - 1:32 pm on Aug 23, 2013 (gmt 0)
Got a bit deep and out f my depth, trying a few things that didnt work, and being very nervous about meddling.
I then cam across something I was able to midify and use to produce this:
RedirectMatch 302 (.*)-sales\.php$ $1.php
This appears to do just what I wanted