Dictionary
buyer's elation
n.The retrospective delight experienced when an apparently unnecessary, extravagant, or ill-advised purchase turns out to have been an exceptionally good idea.
Variants
Vindicated buyer’s elation: Buyer’s elation accompanied by the additional satisfaction of having been advised not to make the purchase.
Example Usage:
V: “Still regretting buying that thing?”
A: “Regretting it? I’ve used it every day for the past year.”
V: “Ah. Buyer’s elation.”
A: “Vindicated buyer’s elation. You told me not to buy it.”
See also:
buyer’s remorse