This one personally thinks the price vs value of the items in the Bazaar is all over the place and sometimes absurd. The lack of polish and frequent bugs when new items drop is very irksome.
But your mileage will vary
As for the define Whale question…
This one has seen a few attempts to define categories of spending habits in games.
Plankton being non-spenders/free to play
Minnows being in the sub $20/month range
Dolphins being $20-$100/month
Whales being $100-$250/month
Krackens $250-$1k/month
Leviathan being $1k+/month
This is in relation to mobile games and the numbers are about a year or so stale.
However, if that is accurate or translates well this one does not know.