Yeah, that's about what the Broadway tunnel is going to cost for the Skytrain extension in Vancouver.
Edit: Though of course an urban tunnel cut down an extremely busy street is worst-case scenario. That money would probably buy you a lot more rail elsewhere.
The Broadway corridor has possibly the busiest transit line in North America and the per-passenger cost will be quite low, when it's finished.
Hey cottage cheese on toast is great, that's my breakfast most days. With pepper and nutritional yeast usually.