Back in the day before PLEX was broken up, a single PLEX was worth a full month of game time, so the minimum donation back then was the equivalent of 500 PLEX today. Accordingly 200 PLEX is a relatively “small” quantity of PLEX compared to what the minimum used to be.
The reason for the requested minimum is that all the contracts have to be checked and accepted manually, and there are hundreds coming in every day - it’s a big task! Honestly if someone sends even 5 PLEX we wouldn’t reject it - every little bit helps and we appreciate people giving whatever they’re able. The 200 PLEX minimum request is just to try and strike a balance between donation size and admin overhead.
So if you don’t have 200 PLEX and still want to give you can, or you can get together with some spacefriends and pass the hat around first.