I worked for ABCi back in 2013 when they had some paid staff (senior teachers) and volunteers. Volunteers were in Austria for 3 months and got teacher training, free lodging in some of the most beautiful places in Austria and wonderful experience teaching. I then moved back to the states for two years and when I returned to Austria at the end of 2015 I was surprised to see an advertisement for a job placement on the Austrian unemployment website. I applied for the job and was amazed at how much the organization had changed. It is no longer the two man show of Mr. Carle in the office and Mr. Stone in the field with other staff helping create the programming and being lead teachers in schools. They have established the English Teacher Training College of Austria where student teachers get scholarships for different certificates (CertTESOL, CELT-P, etc). If I had known this I wouldn't have paid over €2500 for a CELTA in the US. I will admit I miss the days of 1 lead teacher and 4 volunteers teaching at a school in the alps with the afternoons free to explore the lakes while living in Gasthäuser. Now Student Teachers pay their own way to Austria, but are provided with dorms (VERY much like the ones at your local state college... no frills here), travel to and from their teaching practice locations, subsidized teacher training, BASIC food (think staples: rice, pasta), and the support of all staff.
ABCi has gone from a somewhat hectic volunteer organization to a real professional college (although sometimes it is still hectic, especially the first week of a course).