There's only volume breaks at 100 and 500 - compared to 2, 20, 100, 25 and 500 for Kooks/Koalas. Also the price breaks are out of whack - price break for 100 horses same as 2 kookaburras, 500 horses same as 100 kookaburras.
Actually I don't mind this - I guess the mint got sick of seeing the bulk of distributors making a killing on a super popular release, and decided to have a piece of the action themselves. Free market and whatnot.
The retail shop and the mint's online shop are different "businesses" within the mint, so they could set their own limits - but the website is at odds with what the blog says.