If it is a real Rickenbacker, then yes, the instrument will be worth more than the cost of the parts to restore it. If not, then the cost of parts will be more than the end value of the bass. To me, since I do own a Rickenbacker, it looks like a copy for these reasons:
1) the body does appears to be of another wood besides maple, which is what Rickenbackers are made of;
2) the pickup surround of the neck pickup has a wider overlap onto the bobbins than a real one;
3) the pickup bobbin of the bridge pickup has square corners rather than rounded corners, as does a real one;
4) look at the truss rod - it should have two truss rods adjusted by 1/4 inch nuts, not a single truss rod - I can't tell which it has from the picture.
There are also some ways to tell under the pickguard if you take it off and post a picture of the body.