tendergrills.com - please peep this n give your thoughts

"Stuff" is already plural and uncountable, so it doesn't have a plural form.

According to NameBio, there have only been 9 .com sales ending in 'stuffs'.

Nobody really wants to rent stuff. Maybe a house, but that's not really stuff. Furniture rental is a big business, but I don't see this as a fit.

There actually is a developed site on the .today domain. The only other extension registered. They might be a customer. But really doubtful, since the copyright date on their site is 2003. That's probably a mistake though, since .today only came out in 2015. Shows how much attention they pay to their website. Also, if they really wanted the .com, they probably would have registered it when it was available.