You can buy brand new 17" VGA monitor Benq 702A in Germany here:
Bitte melde dich an, um diesen Link zu sehen.
Old monitors will have problems with leaking condensators sooner or later, just like old computers.
So, why don't buy brand new monitor excellent for Amiga and be sure it will work for many years?
It even has perfect ratio for Amiga resolutions - 5:4.
Monitor came with VGA cable, so you only need one more thing - Amiga RGB to VGA monitor adapter:
Bitte melde dich an, um diesen Link zu sehen.