Tekton has best warranty in the business for an online tool company. The worst is Vim tools where they charge you $10 shipping for the new tool, even if it's a $5 socket. Vim will let you warranty only up to 3 tools for that $10 shipping and then you need to submit a second warranty for another $10 for the next up to 3 tools.
Vim claims if you buy the tools directly from them, then you dont have to pay the shipping, but their website charges at least 30% higher prices than any other retailer and also their online warranty has no way of saying "I bought the tool directly from you, let me waive the $10 fee" you'd have to email them, I guess. And that "no shipping if bought direct" is not written anywhere on their website as an official policy, it's mentioned once by the owners son on a YouTube video last year.
Then you have middle tier warranties like Capri tools where you dont pay shipping but you do have to show them a receipt from an authorized retailer.