Listed item for sale on craigslist.org. Received email from 'firstname.lastname@example.org' asking simply "still for sale", after I confirmed item was still available I received a response from 'Walter Ferdinand' (email@example.com) with the following email "Hi, Am glad it's available. I'm going on a vacation to London but I will instruct my assistant to prepare and mail your payment which I'm sure you will get in about 4 - 6 business days. I'll add $20 extra for the delay. I'll pay by M O or cashier check so send me your info (i.e full name, mailing address and your phone number) so payment can be mailed out immediately. I will also make arrangement for pick-up which will be after you must have received and cashed the payment. Awaiting your info. Thanks" This is the fourth or fifth time I received roughly the same email when trying to sell on craigslist.org.