So has anyone else noticed that the 'usual' price for Balloon Fight is £4.49? The Wii-price is 500points (£3.50) and Iwata-san said the regular price will be £3.49. So, although it's now showing for 30p, why is the 'usual' price £4.49? Is this just a mistake?

its at 30p cos theres a promotion 30th years of famicom, 30 days, 30p and 500 points = £5.00 when the points system was realsed a 2000 point card=£20 so the £4.49 is cheaper

I wondered the same thing, so I think it must be a typo. Either that or games that Iwata worked on all get a £1 premium!

500 points is actually £3.50, if you buy directly over the Wii Virtual Console. The price is increased if you purchase a voucher from a retailer though.

Not related but is Balloon Fight also 60Hz now? I ran it last night and there's no update, but I was wondering if possibly it's something where I'd have to delete and redownload?

£4.49 is the usual price for NES games on 3DS VC and 500 points (excluding imports) on Wii VC. So normal price would be £4.49
Also the points cards £15/25/50 use conversion rates just under 90p for 100 points, eg 1700 points for £15.