How often are there Heroes for Hire cash offers?

Heartbreaksoup
Heartbreaksoup Posts: 356 Mover and Shaker
It seems to have been ages since the last one, long enough for my "Thanks for the support" rewards to dry up.  Is there any reason to think there might be a new sale in the next couple of weeks?  I'd rather buy a package of covers and iso than the iso in the resources shop...