Et tu, Costco?

Buy now, pay later, with 36% interest

With its family-friendly bulk packages, high-quality Kirkland store brand, and, more recently, competitively priced gold and silver bars, Costco has always taken care of its customers.

So its introduction of yet another way to accumulate ruinous debt feels like a betrayal:

Costco launches 'Buy Now, Pay Later' service for online purchases

(ABC News) - Cos…