Most Swedish mausers are match numbered (they never went to war). The M-96 Gustafs rifles are selling from $300.00 to $350.00. The Oberndorf 96s about $100.00 more. They are primarily chambered for the 6.5X55 Swede. Ive owned both the 96 rifles and M-94 Carbines. Both are sweet shooters. Fabrique de Nationale of Herstal, Belgium also made a small contract amount of M-96 one of these price wise is a whole different story. If your wife does relent and thinks its a good idea to have one, take some good clear pictures and post them on:
http://forums.gunboards.com/ under the appropriate category.
This site is a wealth of information for WWI & WWII weaponry, including handguns.
There are quite a few experts that can tell you anything about a particular weapon that you would want to know.