Looking for a good deal on CZ P-07 and P-09 magazines, I'd like to have a couple spares. I've looked in all the obvious places, very few even have a listing for the mags, if they do, they are not in stock. The very few places I found that had them, they were close to $60 plus shipping. I know 75 magazines will fit in the P-07, but they are too long. I've heard back and forth that the P-10 mags will work, but not sure. I need to keep the length correct for the P-07 and P-09. Anyone know for sure which magazines will interchange and fit properly? Source of correct mags?TIA