I remember when I was a kid there was a thing called lay away at the department stores. It was basically buying something ahead of time, but the store held onto it until you paid it off. So people would go and make a payment every week. Then we have the rental places and those have been a downfall for people for years. They are probably one of the main reasons the collection agencies stay in business!
Oh, I was just talking about lay away in another comment. Even that (which wasn't great) was better than this now. It would be interesting to have statistics on how long good feelings last after purchase and, how many people truly have buyer's remorse.
I always get buyers remorse. All the time, no matter how big or small of a purchase it is I feel. Even if it's something that we really needed too. It's a curse!