Fix the rust or switch the cab?

[kcackler]

I've got a 77 C10 with the usual signs of aging...Rusty rocker panels and rusty floorboards about 2 inches in from each door. I can plainly see the road from the passenger side, and can see the road if I look hard enough from the driver's side.

Now, my problem is that I don't own a welder, and even if I did, I'm not confident enough in my abilities to start replacing such key elements in the cab. Meaning, I'd need to pay a shop to spend some serious man hours repairing the damage.

So I guess the question is: What would be cheaper? Buying a rust free cab and switching it out myself (It's a fairly straight forward process, isn't it?) or paying a shop to repair both floorboards, rocker panels on each side, plus a few other rusted-through spots?

I'm not sure what the going price is for a rust-free 77 cab...