Reasonably comparable guns sold at Holt's March auction for prices that translate into $5,000 - $7,000 delivered in USA. Keep in mind that Cabela's would have to pay the same price as you or I for these guns. Per discussion thread with Hugh Lomas, a dealer will need 30% mark-up to stay in business. So, a gun that hammers at £2,800 in London gets into the hands of a USA buyer for $7840 (about 20% buyer's premium, about $2/£1, and air freight = a 2.8 multiplier to hammer price). $7840 with a 30% markup = $10,192.

For anyone wanting a high condition Brit 20 gauge, that is the market. Of course, lower condition guns are cheaper - a lot cheaper. My point is not that Cabela's price is "correct," rather, they are certainly within the market. High demand for these scarce items is really pushing the market price up.