42 inch rear discharge deck shell

[WHwest8597 85]

Does anyone have an idea how much a 42 inch rear discharge deck shell costs?  I have all the parts to build a deck except a shell.

[doc724 925]

The shell cost from Jack's Small Engine is $662.  You can probably pick up a used complete deck in good condition for half that.  Also check ebay.  I have seen NOS shells there from time to time.