They are all made of the same material, and there is no difference. Online prices are cheap and there are many patterns, but it is not necessarily cheap when postage is included. Because they are all paper, the color will fade over time, and it is difficult to remove the adhesive. Tearing them off will remove the paint. So be sure to choose a good location before posting.
It doesn't matter if you use it for a few years, it won't fade anyway. The main problem is fading. Every family is different. If the posted place is directly exposed to the sun, it will fade after one year. Where there is no sunshine, it will be fine in a few years.