Not to debate that point, but I honestly didn't know any of these products existed. I've bought a few other PDF adventures, such as Goodman's Dungeon Crawl Classics series.
The long thread on Necromancer Games' adventures is evidence to the contrary (somewhat).
Really though, Bastion press is not really known for adventures. I mean, I'm probably familiar with Bastion's stuff as anyone (anyone that doesn't work at the company), but I didn't realize they had any, other than a couple free ones on your site.
To a certain extent, I think companies that do okay selling adventure really spend a lot of time promoting themselves as adventure companies. Or old-school companies. Necromancer games ("3rd edition rules, 1st edition feel"), Goodman games and their Dungeon Crawl classics that look a lot like the old style covers, even Ed's Whitethorn stuff tries to go after that classic look (and very very bright orange).
Bastion is known mostly for Oathbound and for putting out somewhat unusual sourcebooks. (Unusual as in, not the typical splatbook sort of sourcebook. Who else would put out books like Into the Green or Airships?)
I used Waters of Akaya as inspiration for my first Oathbound campaign and it was very good. I'm now running my second Oathbound campaign and Horrors will be getting a run in another level or two. I voted for Waters based on actual play experience but have to admit that Horrors looks great.