It's a freakin' scam, dude. Please think about it a minute and don't let greed blind you.
Phone up DHL and ask them if they have an escrow service, and how it works. Answer - it doesn't. DHL's web address is DHL.com. The web link you gave is NOT DHL, do you understand that? See below - It is some guy calls himself richard eremias -- both the name and address could very well be phony.
The place you send the money to will not be DHL, it will be a phony. Then when your machine never arrives, you'll go to the real DHL and find out that they know nothing about webshipping-dhl dot co dot uk and the money is long gone.
WHOIS
Domain name:
webshipping-dhl.co.uk
Registrant:
richard eremias
Registrant type:
Unknown
Registrant's address:
40c bilston street
sedgley
DY3 1JB
GB
Registrar:
Freezone Internet Ltd t/a FreeZone [Tag = FREEZONE]
URL:
http://www.freezone.co.uk
I'm guessing you saw an ad on Craigslist or another free classified, emailed, and the guy gave you some story about being in England right now but he can ship it to you (insert long involved explanation about how perfectly safe it is). He even offered to ship it for free, right?
Treat EVERY craigslist sale that is not in your local area as a scam. There is no reason for someone to advertise goods on your local craigslist if they are hundreds or thousands of miles away. Insist on face to face transactions, in a public place, where you get to inspect the goods, (fior a high cash value transaction, make it clear you will NOT be carrying the cash, but will go to the bank with the seller and get the cash if the goods are acceptable) and get receipts.