While refurbs can be a nice way to get a warrantied Mac, direct from Apple, for less than retail, I do want to say we've seen better deals at Amazon (and/or other retailers). No matter how you slice it, M2 Mac mini is a solid little nugget.
As a matter of fact, my 12 yo calls his Mac mini 16/512 Power Nugget. He is loving it, for what he uses it for most; Steam, YouTube and 3D printing. While I haven't spent a lot of time with it, I have been pretty impressed with what I've seen. Performance is pretty incredible. Working in multiple, fullscreen spaces, he's doing things like playing a heavily mod'd KSP, via Steam, full-tilt, whilst streaming YouTube and the the M2 almost feels bored. The form factor, something I didn't think much about at purchase, is pretty cool. Super clean and quiet. His 24" monitor sits nicely atop that little 7.5" x 7.5 x 1.4" block. And the price point - even for an upgraded 16/512 - worked.