Herblock's Law: If it's good, they'll stop making it.

Also note Ferengi Rule of Acquisition #141: Only fools buy retail.

I say if it's great and you are buying below wholesale, stock up. I've done this with everything from Cross pens to LED lanterns.

Later on, you can donate them to charity. Or sell them on eBay. In the meantime, you have a first-class hoard of quality gifts for every occasion. Believe me, that's a sweet problem solver.