Bambu Lab filament pricing is very similar to Sunlu pricing if you purchase the same minimum quantities as Sunlu, but Bambu Lab has a wider variety of filament that people actually want. The only thing that really helps them make more money is wasteful multi-color printing.
Reportedly it's Sunlu who's supplying filament for Bambu. But Bambu's version still has RFID tags which make it much easier to work with multicolor.
> The only thing that really helps them make more money is wasteful multi-color printing.
They're slow to make improvements in this area, but they recently introduced some options to reduce the waste, like longer retraction before the color change. Plus as a user you can reduce the waste further by tuning flushing amounts, and you're left with the waste inherent to single-extruder multicolor printing.
Overall yes multicolor can be wasteful, but to me it's impressive that it exists in the first place