At one time, I didn't really like Power Grid so Ted made my piece a Power Grid piece.
When last I checked, the PC game was still available for download from Germany for about $10. The real trick is ordering on the German site. (after googling...) Hmm, it doesn't look like it's available from SoftUnity anymore. Amazon.de seems to have it (http://www.amazon.de/Koch-Media-Deutschland-GmbH-Grande/dp/3...), and there seem to be other places to get it. Koch Media is (was) the manufacturer.
AFAIK, there isn't any other way to play it online. Spielbyweb has had a forum up for El Grande for a while, but it's locked and there doesn't seem to be any development on that.