80€ for Makita and 40€ for no-name brand. They've been tested and the 5Ah rating is accurate. What's remains to be seen is how these last long term.
At this point, I only run off brand batteries in my Millies. No idea how long they last either because they get stolen before that point, but at least it isn't $220 to replace a pair. Also one of the biggest reasons I switched back to corded tools