Check out Lever Arms, they are offering commercial 98 rifles, chambered for the 8x57, starting around $400. They get more expensive with double set triggers.
They are drilled and tapped, with triggers already regulated.
You can't purchase a decent receiver for that price. Then you would have to machine the receiver for scope mounts. Very easy to rebarrel.
If you want to purchase a new build 98, take a look at the Zastava M70 rifles. They come chambered for most popular cartridges and are well finished/accurate.
Much cheaper and less work than building your own from a surplus receiver.
If you insist on using a surplus receiver, for the thrill/experience of building your own, look at any of the 98 Mausers available, other than those with slightly shorter actions. The shorter action models can be very difficult to get aftermarket stocks for.