I'm amazed that anyone buys any product without some sort of warranty. It's unfortunate (and highly unusual) that your friends had to use their warranty, but at least they did have a warranty to get their Provari's repaired.A truly great product doesn't need a warranty or service.Sadly two of my friends who had prov's had to use them.
Try that with the Chinese manufacturers and see how far you get. (Hint: there is no warranty, unless the vendor adds one themselves.)