Searching for anything relating to, Anton Boos, 934 Stamm. Kp. Pz. Erz. Abt. 7, 3 Kompanie, Panzer-Regiment 2, 16th Panzer-Division (My father)
.....it will probably cost you more than $10 though.
... quite a bit more than $10. And although $10 is not a lot of money, I agree with Adrian in that you should return them if, for no other reason, than merely the principle of the thing as you were sold these items (apparently) without disclosure.
you could, on the other hand, keep them for future reference.
I myself have a very high-end fake... a Verwundetenabzeichen in Gold. It fools many collectors to whom I show it. I bought it from a reputable dealer who is perfectly willing to take it back. I have no hard feelings because the thing really is that good. I paid $400. I have become attached to it and kept it as a reminder of how good fakes can be and as a piece against which to compare others for differences that are truly subtle.
So it stays with me, labelled as a fake, hopefully not to enter circulation again as a purported original.