The coin is nice and the price was good. Perhaps average price or even a little better. You did well IMHO.
Not a bad deal for $35 and it's a nice solid coin with more silver in it than usual. Here is my Postumus that I got for $30. Postumus BI Antoninianus, Lyons, 260-269 AD, 2.4g, 22.0mm OBV: IMP C POSTVMVS P F AVG, Radiate, draped & cuirassed bust right. REV: HERC PACIFERO, Hercules standing right, holding olive branch & club. REF: RIC V-II 67, RSC 101, Sear5 10946.
Congrats, that's a very respectable example. I think you did well pricewise too. My example of the same type - yours has a stronger portrait:
This one I got for $30, but that was three years ago. POSTUMUS Antoninianus OBVERSE: IMP C POSTVMVS PF AVG, his radiate, draped and cuirassed bust rt REVERSE: PROVIDENTIA AVG, Providence standing lt., holding a globe and sceptre Struck at Cologne, 265-8 AD 2.90g, 21mm RIC 80, 323; RSC 295; Hunter 75
I think you did well---paying about what we all seem to...and that is a very nice example comparable to what we are all posting and for a similar value. My example was purchased so long ago, I can only guess at what I paid for it---probably about what you did in today's dollars:
Again C-B-D, that's a great coin ... => here's my Postumus example (ummm, but I must admit that I paid quite a bit more than $35 for my lil' Galley-sweetheart)
That's a great coin at a great price, C-B-D. Well-centered with full inscriptions, and copious detail on Providentia. Nice find!
Those are exceptionally nice coins. Now, to make your acquiring ancients more interesting, pick up a good book on ancient Roman history and learn all about those interesting emperors. That's half the fun of collecting ancients, learning about all those places and rulers who issued them. Bona Fortuna.
I agree the purchase was good if not better. Postumus will be a hard one to give a 'right' price for since his coins vary so much. You will pay more for earlier good silver than the later copper ones. You will pay more for pretty boats or other special types. You always pay more for good, solid, non-porous metal. The way most of us handle the situation is to buy 100 coins and pay too much for 50 and too little for the other 50. It all comes out in the wash. I see no reason you should not enjoy that coin for a long time to come and hope you will be sharing others of Postumus or whatever strikes you as worth being your next purchases.