These listing appear all the time. The sellers usually ask between £10 and £20 and often have 10 or more watches listed at a time.
Very clearly fakes and I have reported a few listings and had them removed.
Even if the seller is decent enough to send something on to you, it will have come from a sweat shop in a back street in China, certainly not the Seiko factory.
Buyer beware on these.
Getting any SARB017 in top condition below £400 is getting difficult these days, which makes a joke of these £10 offerings.
Also, check out the sellers other listings. The last one I saw was also selling old DVDs and second hand baby clothes. Doesn't sound very WIS does it.