I work at Ford Motor Company at the Kentucky Truck Plant so I can listen to podcasts, audiobooks, and even ibooks for ten hours a day.   

It looks like a motor and tank with a piece in the middle missing.  

The cost here is probably 2400 total with motor installed.

Half of these tiny houses are RVs without motors.

We are now having to replace a motor on one of them within the first 18 months of ownership.

@Michael WagnerAlso, have you ever thought about motor home parks?

The little motors on the windows give out quickly and so they won't work. 

A motor spins the base which turns the cable.There are smaller, hand or drill powered versions.If all the drains in the house are slow, you'll need to find the main cleanout or cleanouts.

Then one by one each vent is opened and the dirt and debris are loosened; a mechanical motorized brush might be used, or they can use compressed air to loosen the dirt.

I had to replace the draft motor in it, for about $1200 (middle of the night on a weekend).