I really don't understand the point of that.
It's not like breakfast cereal. I'm not going to buy another TV because I just bought one.
I really don't understand the point of that.
It's not like breakfast cereal. I'm not going to buy another TV because I just bought one.
But it's worth noting that ad networks are more interconnected than most people realize. You can go to Facebook and see the "off-Facebook activity" they have received about you from partners, many of which are retailers. I imagine purchase-history is part of what's shared if you make purchases with those retailers using a email/phone number that's also associated with your Facebook account.
First, I would bet that multiple stores 'know' you searched for a television, while only one 'knows' you purchased one. The stores that don't know you already made a purchase will keep advertising in the hopes that you choose them, and the one you bought from may not have implemented a feature to 'de-target' you, because their conversion rate is low enough that it doesn't cost them much to keep targeting you.
Also, you may return the first one in favor of another, 'better' model; or you may be purchasing for other people or business use.