I suppose these are handy...if you can procure them locally.
At .99 cents each, it's a good price...until you add their $11-$12 [UPS only] shipping price.

For the same purpose, I've had great success with Tupperware-type sandwich containers, with burp-sealed lids.
My sandwich containers easily hold 10 rolls of 35mm, or 8 rolls of 120.

Marc