[Thessair]

I can't speak to the Power Morphicon portion of your question, but I as for the other:

Every convention is going to be different based on what vendors book in. I do vendor coordinating for a few cons from time to time and even shows with similar themes and close proximity can have wildly varying merchandise available in the vendor room. RangerStop hasn't posted their list of vendors yet, but it seems they're down to a single spot. Until they do, and in fact even after, it will be near impossible to predict specifically what will be available. Your best bet is to wait until they announce their vendors and check their websites to see if they have specific merch listed. Of course, to be fair, by the time the con rolls around their stock may change significantly.