Are you bending the tips or the ends into which the tips fasten? If it's just the cheapo tips failing, buy a new set of quality tips, they are standard.

Of course they'll probably cost you more than the HF pliers, but still less than a whole new pair.

That's assuming, of course, that you otherwise like the pliers themselves. If they're not convertible or are difficult to use, etc., then just replace them with a quality brand. I have a pair of Kleins that have been bouncing around in my toolbox for more than thirty years and they've always worked fine. (They are the changeable-tip type, and it's a bit of a pain to change the tip but they work fine.)