Let me tell you. A couple of years ago I purchased a LEFT HANDED Beretta Silver Pigeon Sporting 32" for a price close to your target price. I was told that all Beretta O/U guns imported into Canada were RH cast. I paid for the gun, but before I even saw it, it was returned to Italy to have the RH stock pulled off and a Lefty installed. I paid an EXTRA $200 and waited close to ten months for the work to be done. (If I'd have known the wait time, I wouldn't have bothered). The gun had LH cast with an LH palmswell.
It fit me beautifully. I wasn't getting enough use from it, so I sold it last week (and bought an A400X for hunting). I now regret selling it, because it'll be a headache to replace it later.
I'd suggest that you look for a lefty gun, or one with a neutral cast and no palmswell. Buy something you'll enjoy shooting, even if you need to save a bit more.
Having said that, my RH son used that LH gun to shoot his first 25/25! He didn't seem to mind at all.