There are many products that you will never see advertised on the television. The reason is basic; there is no market where saturation is evident.
Here is a short list of a few of such items:
Songlasses by “Ignorance”.
Hearing aids by “Common Trivia“.
Gloves by “Doulas Hands“.
Desire Perfume by “Greede Monger”.
Rubberized dentures by “Jabber Jaw” (a division of gossip international).
If the market is saturated there is no profit to be had.
By His Grace