I use the Wishlist function on many websites so when it's deal time I can flick through to see if there's anything I still need or fancy. Nothing on my lists were on sale at all.
Wife found a Shark vacuum cleaner which was (apparently) discounted 47% to £180 and really wanted it - I think that's our only purchase; everything else for 'sale' was stuff we didn't need, or stuff that didn't even feel like a bargain so good you have to get it, even though you don't have an immediate requirement for it.
A rather disappointing year - but I've personally never been that big into the Black Friday/Cyber Monday sale scene anyway.
Not a bad deal, though i do find vacuums tend to be on sail all the time anyway!
I'm not too into the whole sale black Friday etc, but if it's close I like to hold off on the off chance something good comes up but, these sales have gone the same way as Steam sales for the last few years, all garbage.