Here on Ebay Belgium, UK and Germany, there's very little vintage Apple hardware to find. Like you say, if a Compact Mac comes for sale, it's a complete one. Parts are almost impossible to get here in Europe, Ebay USA is better but things like an SE/30 logic board is very rare.
We could use a fellow collector in the USA that buys the complete Mac and sells us the parts we need. Wouldn't that be a great project ?
I do agee that ESD can damage boards, however I still have to see my first case. Maybe the dead SE/30 board is my 1st case as visually, under a huge magnifying glass of 20x, I see nothing wrong with it.
I do pack all my parts very well myself in anti-static bags, not something I can say from the boards that were send me to me.
It's something I definately recommand to everybody.