this has got to be a paypal scam...

[awbrown]

Got this email today after I replied to an email saying this person was interested in an engine i am selling.. after seeing that he has already used 3 different email addresses , I think
I will pass.

Thanks for the prompt response to my mail, I am a Marine Engineer, I
am at sea right now. I am buying this for my personal use so am
willing to offer you the amount you required.(I don't have internet
banking with it), but i have it attached to my PayPal account, and
this is why i insisted on using PayPal to pay, All i will need is your
PayPal email address so that i can expedite the payment asap, and if
you don't have a PayPal account yet, you can set one up at
www.PayPal.com it can't take you less than 3mins to do that, I will
be expecting your PayPal email so l can expedite the payment at once.
I have a pick up agent that will come for the pick up after payments
has been sorted. l will be waiting for your reply asap. please include
your final price for the listing. Best Wishes Mark.

Seems like paypal will refund money for any reason at all so I think this one is a no go ....