[boomboomsubban]

They already offer download servers for free, and I doubt a credit card fee comes close to 30%. I'm not positive what their reasons for choosing to charge on the app store are, but "they couldn't self host it for cheaper" isn't it.

[titoCA321]

You're right we don't really know the real reasons why Document Foundation charged the price they did, after all they could also put the app on the Apple Store without charging as well, and some developers do put apps on the Apple Store without any costs to the end-user.

There's a bunch of other related costs associated with commerce on apps. This is why some developers don't "charge" for apps or don't setup their own storefronts. Take credit card charge-backs or fraud disputes. By going through the Apple Storefront, Document Foundation is outsourcing that headache to Apple.

[boomboomsubban]

>Take credit card charge-backs or fraud disputes. By going through the Apple Storefront, Document Foundation is outsourcing that headache to Apple.

You know what also solves that headache? Offering a cost free download of your software. Like LibreOffice already does for MacOS, which they say is the recommended source for all users.