https://shop.vitacore.ca/collections/frontpage/products/can95e-black?variant=42491452752129 black masks. cost 2.7$ per mask for 10. 2.56 per mask for 30.

https://shop.vitacore.ca/collections/frontpage/products/of-can95e-earloop-version?variant=42787432923393 white masks. 2.6$ per mask for 10. 2.53$ per mask for 30.

Not including shipping for vitacore unless buying over 100$ worth.

https://www.londondrugs.com/search/?q=n95&lang=default

cheapest is 1$/mask for 50, but not sold in 1 out of 2 store. Free shipping if over 75$