Why would You sell 5MH/s unit for 1350 GBP, when it would make 1450 GBP/month mining DOGE for ex. at this moment?
Altruisam? Or You will "test" them for a month before? Maybe two months. Or three. And the delivery will be ethernal "two weeks".
Anyhow I'll buy one. If you accept payment one month after delivery.