There are several skills to distinguish the original disc from cam-(speaking from experience, for reference only):
1. Look at the lower part of the back of the disc box, and there will be a registered trademark of the copyright company on the spine of the box, so the trademark must be clearly printed, otherwise it will hang. As you said, archiv company, the logo is mostly white, with tulip crown logo on the top and capital "ARCHIV" on the bottom; DG is a German phonograph company, the most professional classical music record company. The logo is yellow art bricks, the upper part is also a tulip corolla logo, and the lower part is two rows of German (irrelevant); DECCA's logo is a combination of blue and red, and telarc is a long string of bold and bold "TELARC" logo.
2. Authorized music companies will print the copyright source and publishing company on it. If a record has many company logos on it, it is generally pirated.
3. The layout in the disc box should be neat and simple. Without those fancy things, the disc printing will be very clear.
4. If it is a symphony, concerto, solo or the whole concert, there will definitely be the name of the conductor, orchestra or performer.
5. Sound quality, this is the grasp of long-term musical sense, but you can try to increase the volume and listen to the background noise.
regarding the price, this is normal! Genuine good discs produced by record companies like Star Alien are also very cheap, generally not more than 5 yuan. I wonder which record company printed yours.