My son recently bought a Sig P250SC but unlike my Glock (equivalent) his Sig only came w/ 1 mag. We've seen 12 round (extension) mags in the $30-$40 range on-line, but they add $10-$12 for shipping - which seems outrageous. Any 'source' suggestions? Dave=Dad on behalf of son. - e-mail - trombkd@wideopenwest.com