In case anybody is interested Popcorn have been selling refurbished A100 (the original PCH) and B110 (the PCH on a MB that fits into a standard min-iTX case) for significant savings.
The A100 is currently out of stock but I managed to pick one up for US$99+$35 shipping. Just monitor the PCH boards to see when they will have more stock.
The B110 is still in stock for US$119 and has one advantage over the A100 - it has a HDMI 1.3 transceiver so you can send out Dolby TrueHD and DTS HD Master audio over HDMI. Of course the downside is you need to get a case to put it in.
Still no AAC-HE LATM support so no ready audio playback for our HD broadcasts apart from TV3 but while annoying, doesn't detract from the fact that it's a great player for pretty much any content you can throw at it.