The next cheapest I can see for this is £14.99 at Play.com (exc.voucher codes/quidco)
Can only be reserved for store pick up. Cat no: 568/3635
PRODUCT INFO: A menacing new evil has emerged from the toxic oceans of Venom and now Fox McCloud and his elite team of pilots must reunite to defend Lylat from a massive invasion.
This time Fox returns to his roots with Star Fox Command, a blistering 3-D space shooter on the Nintendo DS. For ages 7 and over.