Are small electronics kits from Wish any good? I bought a handful to test and assemble!

T7 Transistor & component tester: https://www.wish.com/search/lcr-t7%20...

T4 Transistor & component tester kit: https://www.wish.com/search/lcr-t4%20...

Signal generator kit: https://www.wish.com/search/xr2206%20...

Digital Oscilloscope kit: https://www.wish.com/search/ds0138%20...