Memobird Mobile Thermal Printer

Memobird Mobile Thermal Printer

Where can you obtain the thermal paper? Is it expensive?

Per memobird themselves:

So then, will any thermal paper roll work with MEMOBIRD? Yes, as long as the size fit. But you may not get the most optimum printing quality.

The official paper rolls are 2-1/4" x 70’. Searching for generic thermal paper rolls on Amazon yielded 50-roll packs for around $20.