Increasingly popular becasue they can be both infromative and entertaining, and often the cost of airing of a 30-minute black of television time is reasonable

Infomercials

Explanation:

An Infomercial provide are long programs about a product or service but rather than being just an advertisement, it provides detailed information about the product. This can include the features of the product or service that differentiates it from close alternatives. It can also be very informative if it is about a product that is different from what already exists on the market and its uses need to be explained to prospective buyers.

What makes it attractive to businesses is that infomercials are much cheaper than traditional advertisements despite being longer. An infomercial of 30 minutes length can be half the price of a 3-minute advertisement.

answermarket demand;