maybe pop round and check them out at their physical address:
nieyanglu.326hao. zhenpingxian. beijing. china
They seem ridulously cheap, even their "market price" is way too cheap. Have you registered and gone as far as getting the full delivered cost? Is it an Amazon type thing, you know, the goods cost £0.01 plus £4.50 P&P? Is there an export/import tax suddenly added at the end, VAT, sales tax?