Ask HN: Should I offer my app on a daily deal site?

I've got offers to put my desktop / cloud application (it comes in two versions) up for sale on several discount daily deal websites (similar to AppSumo). They all take a steep cut, in most cases I end up having to discount my app by over 60%.

What has your experience been promoting sass / desktop applications on these type of sites? Did it end up being worth it?