I think the 30,000Yen includes 5% Japanese VAT but I'm not sure.
According to a mid-market rate check I just did, 30k Yen is worth just over 205 quid at the moment, so a little over 245 quid once you've added 20% VAT (assuming that 30k doesn't include it).
the PS3 500GB Super Slim is selling at £218.99 and both consoles retail for about 30,000 Japanese Yen before tax in Japan. The £238.99 Grainger Games Wii U price tag is pretty close to what the actual Wii U price should be (£229.99) and that is inclusive of VAT.
XBL : ecosse011172
PSN : ecosse_011172
NNID : armoured_bear