While true not all stamps seem to be crossed out online, that is the case with this pack to avoid reproduction.
Note that these stamps are not manufactured in 2015 which could be one reason.
Another reason could be that all these stamps are listed on a cover, so it's much more easier for someone to take a photo at a store, than those that are in a roll or under a glazed plastic.
There was a Canada Post deal last year and the same thing happened except the stamps were 59 cents and not 63. canada-post-spend-88-get-10-esso-card-4 ... k-1652977/
I got about 10 rolls of the Art Déco stamps which when listed on their site did have the P crossed out but that wasn't the case once I received them.
As well there was another Canada Post deal thread this past December which is were I learn't this postage stamp deal. User @gasking confirmed when he received the pack they were all permanent: canadapost-ca-spend-30-get-free-10-tim- ... st24619763
Lastly, a surviner sheet is a sheet of uncut stamps (not what the other stamps are attached to).
See: https://www.canadapost.ca/shop/stamps/c ... ution=e1s1 for example.