G'day all,
It seems to me, that there are two main factors coming into play here, with these ads.
One is the 'there's one born every minute' philosophy [credit to PT Barnum, a US showman who figured out that the way to relieve crowding in his exhibitions, was to put up a sign above a one-way door that said 'This Way To The Egress'

]. Also stated by the actor WC Fields, in the form 'never give a sucker an even break'.
The other one is to target the 'instant gratification' mentality that's all too common these days - the 'gotta have it right now' syndrome.
If one of these critters desires an 'instant Victa collection', I'd see it as only fair and just that they should be willing to pay a premium price for it!