What this rifle looks like is a sporterized CZ 8mm Mauser army rifle. CZ made them for the Czech army starting about 1924, and after Czechoslovakia was absorbed by Germany in 1939, they made them for the German army until 1945. They were strong, simple, well-made guns, and like most well-made Mausers, they had a good reputation for accuracy.
As far as being a good weapon, they are accurate and fire a powerful cartridge, but they are a bolt action with a five round magazine and therefore have a low rate of fire by today's standards. As a hunting rifle, it is powerful, but has some unpopular features, such as "controlled feeding" (you have to put a round in the magazine to load it; you cannot simply put one in the chamber) and the safety is rather slow to operate.
As regards value, it is a sporterized military rifle in fair condition. Being sporterized means collectors have no interest in it. That is especially true here, since the original sights have been completely removed. Being military surplus means that as a sporting rifle, it is strictly a low-budget, working gun, and 8mm Mauser is not as popular as .308, .30-06, or even 6.5mm Swede (AFAIK).
I don't know enough to suggest a price, but I very much doubt it would bring enough to buy a good .40 automatic pistol. There is a lot more demand for .40 pistols than for sporterized 8mm milsurp rifles, IMO.
All the above is my opinion, right off the top of my head, and I hope anyone who knows better will speak up.
PS - Thanks for putting up very good pictures, raclash. You would be amazed by how many people ask similar questions without pictures.
PPS - Yes, I know that some sporterized military rifles are works of art by custom gunsmiths. This one, while decent, is not one of those.