Their pricing scheme is a bit deceptive:

Viper (Scrypt) Miner (25Mh/s)

£1,635

30% Deposit Required: £1635.

Total price: £5450. Remainder will need to be paid 8-10 weeks before shipment. Shipment will be extra, which shall be notified during final payment.

That's about $10K total cost. I think it's too much.