I have not been able to "test fly" the one from Costco as of yet. Yesterday, I did however try out one from Snap On. I was able to read the date on the coins in my pocket, with pretty good clarity. Just like the Costco model, it also records to a card. I did try the reverse angle mirror and it had good clarity, but like most others can't really show you anything greater that a 45 degree angle behind the probe.
YMMV
 
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