I have at least several tools from RCBS, Hornady, Lyman, Lee, and a couple of others. My biggies are my 4x4 press which RCBS has sent out replacement parts for on multiple occasions when I was running it hard. Nothing big just the normal wear parts, but all it took was a call. I have had them send out stems for dies, and such, and I also have had them send me a new bucket for my Sidewinder tumbler which for what ever reason ate the end off the original after some dozen years of rolling who knows how many cases.
Lee has fixed, replaced, or sent out new molds, handles, two presses, so no issues with them either I did have to pay shipping though on the presses. Whooppee.
Hornady has replaced a couple of pieces in their dies sets over the years which were wrong when I got the sets.
Most of them, like mentioned are eager to please, but at the same time they usually want the offending part back for research to find if there was a material or other defect in them. Who knows they might have had a bad batch of plastic on the inertia pullers and are simply trying to determine what the issue might be. I've broken one from RCBS, and one from Midway, both times I simply ordered a new one. I figure that I have some responsibility for taking care of things myself along the way. Other things they might simply need to polish, or if they can repair it they will if not they usually send you another one. So what if it cost you $5-6 to send it in, verses $30 or more for a new set.
Both Ruger and Remington have done me well on issues I have had with their rifles. Both said "you will receive a return shipping label soon just box them up securely in a plain wrapped box and apply the label." Both came back pretty much the same way all nicely cleaned up and repaired. Neither cost me anything more than the trip to the PO.