Shows like this are playing constantly on the TV at the allergy clinic, and I've finally been able to put my finger on what bugs me about them. They normalize excessive consumption. There's an effective frequency, a number of repetitions at which something like granite countertops start to seem normal instead of like a luxury item. After hearing the drumbeat of Buy-buy-buy-buy for long enough, I bet it influences people to spend money on those items, and I'd also bet that manufacturers pay good money for product placement in those houses.
I snipped this quotation from Wikipedia's article on effective frequency:
Thomas Smith wrote a guide called Successful Advertising in 1885.[6] The saying he used is still being used today.
The first time people look at any given ad, they don't even see it.
The second time, they don't notice it.
The third time, they are aware that it is there.
The fourth time, they have a fleeting sense that they've seen it somewhere before.
The fifth time, they actually read the ad.
The sixth time they thumb their nose at it.
The seventh time, they start to get a little irritated with it.
The eighth time, they start to think, "Here's that confounded ad again."
The ninth time, they start to wonder if they're missing out on something.
The tenth time, they ask their friends and neighbors if they've tried it.
The eleventh time, they wonder how the company is paying for all these ads.
The twelfth time, they start to think that it must be a good product.
The thirteenth time, they start to feel the product has value.
The fourteenth time, they start to remember wanting a product exactly like this for a long time.
The fifteenth time, they start to yearn for it because they can't afford to buy it.
The sixteenth time, they accept the fact that they will buy it sometime in the future.
The seventeenth time, they make a note to buy the product.
The eighteenth time, they curse their poverty for not allowing them to buy this terrific product.
The nineteenth time, they count their money very carefully.
The twentieth time prospects see the ad, they buy what is offering.
Of course that was written back in the 1800s before credit cards were invented and before it became possible to leverage oneself to the gonads by buying on credit. Zero-down, same-as-cash deals are common throughout the home renovation and home improvement industry, and when those aren't available, there's always the in-store credit card. So in this day and age, having been conditioned to buy with credit as soon as they want something, people will whip out the plastic on repetition #15 of the above model.