Price / performance ratio inappropriate

I bought the PC mouse about 5 years ago. At that time, everything worked smoothly with great satisfaction. Over time, however, the following error occurred:
- Wireless function defective -> only cable operation possible
- Mouse wheel button (left) is defective
- Wheel produces squeaky noises when scrolling - but> can be resolved by oiling the Mausradwelle
- Gumming (left and right) broke up -> problem for example by means of high-quality adhesive unrecoverable

Due to the relatively high price of such shortcomings are unacceptable.