Haven't priced Marlin 30-30's in a while have you! New ones are in the $500 range, used are selling for almost as much since Marlin seems to be having QC problems with new ones. A decent Winchester 94 used is even more.
At $250 you need a bolt action. The Savage Axis is probaby the best bet. For around $300 there are several other options.
The bolt will be lighter and more compact than either a semi-auto or lever action as well. If you don't like recoil then get a 243. Plenty for hogs with good ammo.