A Sucker Born Every Minute

My roommate Lawrence recently posted a laundry machine on Craig's List for $100, specifying that the machine was in London, Ontario. This is his correspondence with a prospective buyer:

From: Jim Matthew
Date: Mar 4, 2007
I am willing to offer $120. Just bought a new home in Seattle and I can’t have a look. I will have it picked up by a moving company. The payment will be sent to you via UPS.
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From: Lawrence
Date: Mar 4, 2007
Are you from London? We should really talk on the phone.
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From: Jim Matthew
Date: Mar 5, 2007
Thanks for the commitment! My secretary will send you a cheque for $3812, covering the $120 purchase price and a $3,692 delivery charge which I need you to make to my moving company. Please cash the cheque immediately and deduct our agreed sum of $120 (plus $80 for your inconvenience – please, I insist), and wire the remainder to my moving company via Western Union. I apologize for any inconvenience, but I’m going in for a quick surgery next tomorrow and must entrust you with these arrangements. God Willing!!! Please acknowledge my terms of payment.
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From: Lawrence
Date: Mar 6, 2007
To: Jim Matthew
CC: RCMP Internet Fraud Division
You are a profound imbecile. Please visit Sears where you'll find a superior appliance for a fraction of the delivery charge you seem willing to incur.