You could refuse the offer, but look like you felt for the trick... If this is a fraudulent scheme you became an accessory for their criminal enterprise. Evidence has already shown this is an one-man business façade syphoning funds to Bulgaria. Moreover, if you receive a machine first than the original customers, this will prove their are more interested to perpetrate the scheme and not really serve their customers. Are you aware that there are customers which ordered this product months ago and were promised 2013 delivery?

By the way, could you please provide a screenshot of the information gathered with the tracking number (redacted if necessary)? It will be useful to everyone know where this packages is coming from. It is in the best interest of all buyers to know where the supposedly product is coming from, so everyone can know in advance how to deal with the their respective customs.