I am not the best person to reply but I asked this question about a month ago under the Curios & Relics section and if i remember correctly they suggested purchasing a Yugo Mauser as the cost is about $150, ammo is cheap.
Basically, these are not the most collectable or desirable Mausers but for the money they are great shooters and the 8mm ammo is cheap.
I have been research Mausers getting ready for the next gun show and there are many many many different types.
I actually ended up getting a Swedish Mauser (6.5x55mm ) as I had some printed out information that read..."This Swedish Mauser is in belief one of the finest examples of the Mauser rifle. The level of craftsmanship and detail is incredible. If you have an opportunity to purchase one - DO!"
Go to http://www.surplusrifle.com/mauserswedish/index.asp as this will provide information on some types of Mausers, but keep in mind there are many others.