I'm nowhere near a Dollar Tree. BUT I CAN DREAM!
As per the website you referred us to, the Dollar Tree items have a max sell point of $1.25, and many of the items discussed here have a selling price in excess of $1.25, so I can't see how they can be available at the Dollar Tree...
Could you please post pics of these items you've seen at the Dollar Tree....I think it would be a great idea if a thread could be started for Dollar Tree finds, as I might be tempted to drive to one!
I usually try to post my finds displaying the distinctive Dollarama price sign (e.g., $3 etc) so that people can actually see the price in the picture and simultaneously visually confirm that the item was indeed purchased at Dollarama. Plus I notice that a lot of other posters do the same, so these are confirmed items from Dollarama not from the Dollar Tree.
As for the issue of item availability for Dollarama: I live walking distance to four Dollaramas and I can confirm that by talking to management staff that not all items are shipped to all Dollaramas.
As for that much discussed tote: I saw a lot for a brief time (a few days) at my closest Dollarama but none since. I didn't buy any cause they were nice but not THAT nice IMO! (tempted tho')