Here we go... I certain budgiestew tipped me off to this sale and I have info to add.
I went to CT today in montreal and looked at the radians on sale. They were all from a more recent shipment, but I managed to get an 08/06 because the demo was an 08/06, so I switched 'em. It can be done... the only thing I lost out in the deal was forgot to check for the shoulder strap pads and sure enough someone had taken or misplaced them, but I figure it's not so big a loss
I'm guessing that there is a good chance that all the demos are 08/06, since all the stores would have been stocked at the same time originally. I wasn't allowed to straight up buy the demo because the guy said they would be getting another shipment next week so wanted to give me a rain check instead (the demo was the only one left at the first store I went to, and I only ran into problems there because the RF support thing was missing (presumably in the box, which was not there) as well as the safety strap thing that goes on the back for FF under 40lbs (what is it called?). But, if I hadn't cared about those things, I could have bought the seat no problem (just grab the ticket thing on the shelf with the bar code so they can ring it in--i'm lucky I was reading the manual in the linup and realized what was missing!).
Long story short, I went to another store that had boxed radians in stock and switched the demo for a boxed one, put the new one on the shelf as the new demo. Since it's CT and the customer service people are nothing short of COMPLETELY DISINTERESTED, it was easy as pie and I didn't even feel sketchy doing it--on the contrary, I would have had to actively seek out an employee if I wanted to be noticed, and then would have had a hard time getting them to care about the switch.
Just a heads up for any hardcore 08/06 hunters
I'm new here... and glad to have been privy to this info and scored myself a great car seat for a great deal. Nice to meet you all