The .38 Super Curse Continues

Give me some brass opinions.

I'm eventually going to need more .38 Super brass; I only have maybe 500 cases. And I can forget about scrounging it at the range. No one shoots this caliber. I'm considering "once-fired" brass, which supposedly comes from police ranges. The prices are attractive, and it ought to be as good as my own recovered brass.

Is this a great idea or a recipe for misery?