three. Started reloading with an old but lightly used RCBS JR2 that I got thru Craigslist. Used that to learn on 9mm, added 44 mag/special and 41 mag. Within a year and half added a Hornady LNL as I was competing more, soon after that started 45acp, and ramped up production for competition in single stack division. Almost a year ago got tired of change overs on LNL from 45 to 9mm, and I must confess grew weary of some of the LNL issues that you read about, so took the plunge with a Dillon 650. Dillon store is 15 minute drive from home. Honestly, the 650 friggin' rocks. Mid last year I got into 40 cal after bought a custom 2011 for limited division in competition. I like my arrangement now - single stage for load workups, LNL for large primers, 650 for small primers (which are bulk of my reloading these days - 9 for production division, 40 for limited division)
ETA - four - forgot about LEE LoadAll for shotshells that I picked up couple years ago thru Craigslist for 15 bucks. Hardly use it because can buy cases of simple 12 ga shot for less then can reload. Sometimes I play around with slug loads just for fun. Tried to make short shells to get one more in tube for three gun matches but did not work so great.