I guess I have two such items:
I bought my stainless Rolex Oyster Datejust watch to celebrate a promotion and I *think* I paid about $2,600 for it. I still wear nearly every day 13 years later.
I bought a gorgeous, beaded Badgley-Mishka gown to wear to one of Mr. KR's Navy functions while we were dating. I recall it being in the same price category as the Rolex, more or less. After two kids, I most definitely do not fit in it anymore but it is waiting patiently in the back of my closet just in case it should ever be called back into action!