Why do most InDesign Plugins cost the earth to publish to iPad?

[jamesb99]

Why is it so expensive to publish most material to the iPad from indesign using plugins (like 5.5 and Woodwing) - I did find one free one for plugins and a planning tool GoMobile | The Ultimate iPad magazine creation tool | Try it Free but all of the others seem to simply be profiteering. That one can be used to design and pitch on a real iPad for free but others charge thousands - is it just a case of trying to make money out of it while the GoldRush is on?
Ta

[bigdave]

I'd assume they look at the cost of InDesign and assume you're made of money.

[Dave L]

Apple, Adobe... that whole love-in thing they've got going on...

I understand that the next incarnation of QX - my layout tool of choice - has full iPad/app/e-publishing facilities on board. Nice.

[Dave L]

... in fact, having looked into it a bit more, I'm seriously thinking about investing in and developing iPad publishing as part of my offer.