The pricing looks very straight forward to me.

The lifetime option is less than $20 for either windows or Mac.

Mipony and jd shouldn't be compared with IDM. They don't do the same thing.

Mipony's reason for being is downloading from file sharing sites like MediaFire, mega, zippyshare, nitroflare...

If you don't download from file sharing sites, mipony is useless for you.

For torrents, a dedicated torrent downloader would be better suited to the task.

I'm however finding JD's ability to download YouTube videos quite useful, better than paid YouTube downloaders.