I am looking for the pinion gear repair kit A-20417 for The Shadow.

This part is sold out on a few sites and listed for $50 including tax & shipping on a few sites. What?!?

$12.95 @ Marcos but currently sold out
http://www.marcospecialties.com/pinball-parts/A-20417

$15.00 @ Bay Area but currently sold out
http://bayareaamusements.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GS-SH20417&Category_Code=MOP&Product_Count=9

$30.00 @ Mr. Pinball + $15 Shipping
http://mrpinballa.cart.net.au/details/726002.html

$50 @ Action Pinball
http://www.actionpinball.com/parts.php?item=A-20417

I added my e-mail to the Bay Area Amusements wait list, but I assume this will take forever to restock. Before I shell out $50 for this part, does anyone have any advice on where I can find this at a more reasonable cost?

Here is a link as reference in case anyone else needs to replace this part.

Assembly instructions per IPDB: http://mirror2.ipdb.org/files/2528/Shadow_pinball_A_20417_Repair_Kit_Pinion_Gear_50032.pdf

Thanks,
Brad