Smiff2 is absolutely spot on. Mobiles phones has pretty small profit margin. I can tell you that the G330 is selling approx £95 (sealed) with online re-sellers in china atm. If you include import tax + shipping +re-seller profits margin(let's assume about 10% of the total cost landed). You will be looking around £135 online and perhaps £150 retail.
i have bought plenty things from china and this is not always the case,
i recently got a tablet from merrmobiles that was $99, i payed £62 with the currency conversion and never payed a penny of
"import tax + shipping +re-seller profits"
its was delivered as normal 3 weeks later, i never payed a penny more than the price of the tablet,
actually i have never had to pay any customs to this day (touch wood)
its worth noting that i have only ever bought from china via merimobiles, so not sure about anywhere else
they also sell the G330 £115