Military rifles are less expensive than sidearms in most cases. As with any collecting, you need to go slowly at first and learn what's the deal and what's not. Also, as with any collecting, condition is all important to most collectors for purposes of future monetary appreciation and the desire for the most beauty. I suggest <gunbroker.com>. You can research Enfields, Springfields, Mausers, etc. and get some idea of what the going prices are by seeing what is selling and what is not. EBay is no help because they do not allow firearms. Buyer beware because unscrupulous people abound as with any valuable collectable.