As you said, there are a profusion of Mausers, Mosins and Enfields.
BUT - you missed the SKS! Cheapest centerfire ammo anywhere! Well under two bills for a good Romanian
You could also get a POS 10 round AK......
For another 60-80 dollars, you are into the current entry level AKs, particularly the SAR-2 in 5.45x39