Photography backdrops are the most important equipment for perfect photographs.
You must be selling backdrops! I hate to rain on your parade but a camera, any camera, is the most important equipment for perfect photographs. After the camera, lighting is probably next most important, but you can use natural light or natural light with reflectors, so it does not have to be expensive.
In terms of importance, I would rate backdrops quite low. A backdrop is something to get after you have acquired almost everything else you can think of.