Roon Endpoint with output to Bluetooth headphones

I am running Roon with 2 zones in my home and would like to have music in the garage new third zone that would output to a pair of BT Headphones.  I have searched the forums and online but the only solution I can find is the Node 2i.  I have sent notes to ifi and others but they don't have anything.

Do you know of any other options under $1500?
Thanks, Dave

If you have WIFI, wouldnt an iphone, ipad, or android phone running the Roon remote app work? Direct the audio out in the device to bluetooth.  
It's a idea i had not considered, find a used android phone and load the app.  Have not used roon remote as of yet.