The only thing with those "specials" though are they're a purchase with purchase special, so you have to spend X amount of dollars in order to purchase those items at the "special" price which doesn't necessarily equal value. On my January cruise it was a small insulated Star Wars cooler, it really wasn't worth the price that you had to purchase to then have to purchase the cooler on top of what you had to spend.
As for clearance items, I didn't see any on my last cruise. They even had dated 2016 ornaments at regular price & we cruised in 2017.