Even with the shipping cost of $75 added this is still a reasonable price for a new tank. At today's exchange rate it works out as a total of £196 ($327.19). Of course, this is not taking into account any customs duty that might be charged.
Second hand tanks do come up occasionally, but because they are highly sought after the prices are generally quite high.
Makes you wonder how an item made in Italy is more expensive in another EU country than in the USA, with all that added transportation distance to ship as well.