It's just in German, but here's the price list:
http://www.passionsspiele2010.de/upl...Preisliste.pdf
Let me try to help guide you through it:
The first box is one night (1 Übernachtung); the second for two (2 Übernachtungen).
Then there are five hotel price categories and four price categories pensions/guesthouses and private residences (Privatvermieter).

The only price that really matters is the one all the way on the right (Gesamtpreis--total price (per person)).

The packages with one night of accommodation include one breakfast, one lunch/brunch, and one dinner. With two nights, you get two breakfasts, one lunch/brunch, and two dinners. All packages include tickets for the play and the Oberammergau museum and a program. The total prices include resort charges and ticketing fees.

The website has a UK flag indicating there will be an English version, but it doesn't seem to be active.

Here's the order form:
http://www.passionsspiele2010.de/upl...tellschein.pdf