While I realize prices are high, and it may be going for that today, I think $.40-50 cents per round is too high for 70 year old crap ammo.
I think reports of the Turk ammo being some of the "better" surplus ammo probably originated with the people selling surplus Turk ammo. "Hotter"? compared to what?? US made 8mm Mauser sporting ammo? OK, yes, US commercial 8mm has always been underloaded compared to European stuff.
"Better"? than what? better than German made? I doubt it. I think "better" comes from being "good enough" and being cheap. And it used to be cheap.
Today, other than the cost (whatever it turns out to be) for something that goes BANG (hopefully) in your rifle, it is crap ammo.
It is Berdan primed, meaning non-reloadable in practical terms, AND it is corrosive primed. Plus there is no way of knowing how it was stored over the last 70 years, which may have affected it in many ways. Hangfires and complete duds are common with old milsurp ammo. The bullets are the best part, pulled, sorted for uniformity (weight) they can be reloaded in quality ammo (modern boxer cases and primers).
It may be worth what you are looking at asking to someone today, not to me.
Good Luck.