$150.00 is a good deal for a Turk Mauser in good shape, good score. I have 7 Turks, 3 Czhec, 2 Romanian, and 2 Yugo Mausers I shoot quite a bit. A note on ammo, odds are, if the ammo is in a bandoleer with metal buttons or a later "fold" closure and one of 4 colors, blue, off green, or some shade of grey or brown, the ammo is Turkish manufacture. As far as I know the Turks are the only ones who put their ammo in bandoleers on five round clips (all my Turk ammo is packaged this way). The Yugo, Czhec, and Equadorian 8mm ammo I have on hand is in fifteen round boxes on five round clips. Romania put their ammo in fifteen round boxes loose or on clips. You should consider All milsurp ammo corrosive and Berdan primed. Boxer primed milsurp is the exception rather than the rule. I'm shooting 8mm ammo in my Turk, Yugo, Czhec, and Romanian Mausers that was manufactured in the 30's, 40's, and 50's. Enjoy that Mauser and shoot it, they are a hoot. If you plan to buy more Mausers (you will, and how do I know this?) Robert Ball's Book, "Mauser Military Rifles of the World" (3rd edition) is a good investment to make.
De Oppresso Liber