I have created a Google Docs folder containing most recent PI price snapshots. I will name the files with a "<YYYY-MM-DD> PI snapshot.pdf" format. The first one is 2015-03-31 PI snapshot.pdf
I am fighting a losing battle with google and the Foo Eve PI spreadsheet. It works fine for me, but can't keep it working for everyone all the time, despite different caching strategies. ( http://foo-eve.blogspot.com.au/2014/12/pi-spreadsheet-working-again.html )
So ... I will really cache it, this time as a PDF, manually. As it is manual, it will be updated when I remember to do so, hopefully weekly.
I have plans on fixing this permanently, possibly as a google app. But for now, this will do. Please magnify or download for your favourite PDF reader.