How important is maintaining a steady temp

[Old Smokey]

I have my eye on an N Finity 170 bottle wine fridge and the owner says the dual temp thermoelectric works but doesn't maintain a constant temp. How much deviation would be considered ok? We keep our house at a pretty constant temp of 72f throughout the year. My coolerdor stays slightly below 70f year round just sitting in the corner of the bedroom.

Also, it has 11 sliding shelves and from the pic I have seen has wood trim and the trays are slotted. Would I need to be concerned the wood is not Spanish cedar?

This is a beautiful refrigerator size unit, but this is new territory for me. She said the seal is perfect on it, unit is 7 years old and has been discontinued. MSRP online is $2399. And I can get it for about 1/10th of that price. What do I need to know? Will HF Beads maintain Rh? Will this is it will be suitable for my cigars. I am really tired of digging through a cooler.