I picked up a used one set up for 45 acp. several years ago for $75.00 to go along with the 550b I started with 20+ years ago Works great so all I load on it is 45's Nothing wrong with the SDB excellent press although limited to pistols only. Also picked up a used 650 last year, so I have three presses mounted to my bench.
You'll enjoy your SDB and you have a really good friend indeed!