The bins are in use and working as desired. The key for me was the size of the two bins. The other 16 gal units I looked at had two 8 gal bins and this one's took two 13 gal bags. I verified it with Wayfair customer service and, in fact, it takes two 13 gal bags. Yea! 

The unit is large - great for contents, tough for space in our small kitchen. HOWEVER(!), you can get 1 5/8" castors at the hardware store for under $4. Easy to install. Now our bin is mobile and easy to get out of the way when necessary.