last year i broke like 3 rods one of em being a brand new techspec there all broke right above the 2nd eye so the tip is broke pretty much. how would u fix them iv usually broke poles farther down and took old blanks and cut them down to fit inside the broke blank then glued them together and some shrink tubing. that always worked well for my bigger carp and salmon rods. but these are bass rods. i was thinking of putting welding wire threw it and glue and heat shrinking it. idk how well it will hold though and i dont have the money to buy a new pole

Rod blank repairs are done with either an inner splice or over sleeve. The problem here is the spot that broke. It will probably not ever be the same. For any repair attempt to have a chance of working, you'll want a sleeve material slightly more flexible than the original so that the extra layer has as little effect as possible on the action. Sleeve/wrap seams/ epoxy are the basic steps.

I have question that is related, why would anyone buy a rod with the tip broken off? Like the ones they sell at the bargain cave at Cabela's.

I assume that most of them are bought by less serious/experienced anglers. It depends on what the rod was to begin with though. For example, as much as 3" off a 7'6" Mod action cranking stick may not be that big a deal. Where as an inch off the tip of a 6'3" Ex fast drop shot rod could render it useless for the intended use.