New eBay policy (announced a while back): beginning late October, you can't use checks or money orders to pay for things on eBay.

This is what they say:

Faster, more secure checkout experience

Paper payments end this October

Beginning late October 2008, all items listed on eBay.com must be paid for using one of the following approved payment options:

* Direct credit or debit card payment via a merchant credit card account

* PayPal

* ProPay

* Payment on pick-up

Paper payment methods such as checks and money orders will no longer be accepted on eBay.com.

Links:
http://pages.ebay.com/sell/August2008Update/Payments/
http://pages.ebay.com/sell/August2008Update/ConfidentBuyers/index.html#1
http://pages.ebay.com/sell/August2008Update/BasicFees/

Robert