They are complaining about the Amiga being unreliable, but to me it seems the only parts that are problematic are external peripherals:
1. Mouse; replaced twice in 20 years (probably only needed a cleaning)
2. Monitor; heck, if they really can't get an Amiga compatible monitor, then any CRT or LCD TV with a composite in would probably work using the monochrome output of the A500 (it's actually pretty sharp compared with the A1200s colour composite mode).
3. 1.5 million? Buy a couple more Amiga 500s, or buy a PC and run an Amiga emulator. WinUAE can use the PC's serial port (USB to RS-232 adapters are $3 each online if the PC doesn't have a serial port anymore).
Also, "1200 bit" modem?