That's where I bought mine . Just be carefull because they are only supposed to be for Dhp customers and they might give you a hard time activating it. You might want to email firstname.lastname@example.org to get approval before you buy it. That's what I did and I got mine activated. I like mine so far .
Yeah...I already have a 522 on my account and called last night and they told me I couldn't do it and then they seen I already had a 522 on my account. They then told me since I already had one it would be silly to tell me I couldn't have another even thought I was supposed to have one to begin with.
I don't know about the 322. My 811 is smartcardless (built in would be more accurate to say) but there is still a slot for a card. You could plug a card in to the 811 and take a picture for ebay, so it might just be a clueless 322 seller.