End of days?

Another sign that caught my eye was in front of a large retail store of some sort the windows of which were filled with posters announcing a going-out-of-business sale. Apparently the sale (and the business) was about done, because the sign out by the street had the following message. First, it proclaimed

"END OF DAYS SALE!"

and then

"MANY ITEMS SLASHED!!"

I'm reasonably confident I know what they meant, but I may be wrong.