I believe the IIsi card faces the wrong way to use it in a SE/30 without some major hacks (adapters atleast), and IIsi with an 040 are not exactly prized like a SE/30 would be.
The IIsi adapter plug faces horizontally, instead of vertically. It's not too difficult to get a right angle Euro-DIN connector and plug it into the adapter's plug to turn it 90 degrees and face it upward. I believe this is documented on Gamba's page.
For $150 can't you just buy the proper adapter for an SE/30?
I don't know. I have never seen the adapter which is actually, specifically for the SE/30. So I have no way of knowing what it would actually sell for.
