I don't have a Spectrum (never liked the looks of it) but I do have several other Taurus .380's. I purchased a bunch of .380 ammo from Cabelas when they were phasing out the Herters line for $9.55 per 50ct box (.19 per round). Those prices included sales tax (shipping was free). There can be some cheap .380 ammo out there from time to time but it takes patience. The worst part about it is not wanting to buy in bulk when you haven't run that brand through at least once.
If I could only get $50 out of a gun, I'd keep it, even if I never purchased ammo for it again. I can't imagine ever selling a gun I purchased without thinking some day I would regret it. If one of my Tauruses ever breaks down, I will reluctantly exchange it for the replacement-of-the-day, but I'll still be wishing I hadn't parted with it.
(Of course, both you and my wife might want to say I'm a hoarder).