You are targeted for this because you are in the network of the one who purchased/searched for it. Works like a charm with Facebook and items with a high price

You are targeted for this because you are in the network of the one who purchased/searched for it. Works like a charm with Facebook and items with a high price tab (like high end phones) because the one who search for the phone advices with the end buyer. I've never seen it for low price tag items. Probably there is an algorithm out there calculating the odds of becoming you a customer. Probably you are on the age target for that brand.