Its the way the Japanese work, any dealer can get Dragon from them in Japan, stick a margin on and sell it.
So if its £25 out the factory, add a margin sell for £35 In Japan
For the UK its a sole distributor, who then has to stick a wholesale margin on it, then a trade margin, then a retail margin.
So roughly importer gets it at £27 landed, wholesaler price, £35, shop price around £45+VAT so shop sells for 79.99 Inc VAT.
The odd manufacturer that will sell to any UK dealer direct who then may not add a wholesale or even a trade margin means 1 or 2 of these margins are missed out so the product is more competetive in the UK market.
So the Japanese will get £35 odd into their economy if you buy direct or £25 if you but it from a UK shop, maybe thats why the yen is so strong and they rather the "sole" distributor route as this ensure more and more money flows into the Japanese economy from the UK and elsewhere.