@Caleb Hogan is spot on here. Unless there are some deal specific things, I would say in a vacuum that you’ll never ask for or get warranties. Some exceptions could be if they’re vouching for something and you’re getting a big bad vibe. Like say they swear up and down that their WWTP doesn’t have issues. There can be random, deal specific things that a warranty can help with, but in general, that’s not unexpected that they decline this and it absolutely is not a deal killer if you don’t get any