Yup, I can take E-470, starting at Quebec and the Northwest Toll to where it ends to get to work and save about 15-20 minutes, and it's around $10 round trip. Crazy expensive but really does save a lot of time. But $200 bucks a month in tolls is not my thing. The one toll plaza on the NW Toll (west of I-25 to Hwy 36) is almost $4 by itself. But we use it all the time to get to the airport, because there is no other quick way to get there.
As noted, C-470 (the part of the "loop" that is west of I-25 to I-70) has no charge.