I've bought and sold via TMR, and they're stand up folks. However, their descriptions can sometimes be slightly off. But, find me a dealer, journalist or audiophile on the planet who would have full product knowledge on the range of gear they sell.
I'm currently having a protracted issue with an amp (supposedly with full manufacturer warranty) that didn't get through two songs that I returned and has been somewhere for the past couple of months without an ETA or proactive status updates.
So, I'm in the due diligence camp. However, as it relates to manufacturer warranties, they should provide specific information or none at all. Don't dangle it as a worthless trust signal!