The 3200G comes in stock here often (~14 days between), but you need to be quick to get one. They're quickly sold out. Athlons are available semi-regularly, but the 3000G is way overpriced.There is a severe shortage of APUs worldwide in the DIY market, there is just no way that AMD can produce enoght of them.
3400G has been MIA for the past 6 months.
I do hope they have built up a large stockpile for launch. I rather fancy getting a 5700G, if priced reasonably.