If you only have one snake, you can buy many in bulk and vacuum seal them in sort of "serving sizes." say, 4 in one vac sealed bag to last you a month?
That'd be something you'd do on your own. I buy in vacuum sealed bags of 20 smalls, and break it down into ziplocks for the month. Grab a ziplock, defrost, warm, feeding; easy and simple.
It's more of a convenience factor. I have 2 bp's at the moment and so far I've been buying the arctic mice from petsmart. In time if I get a few more i'll probably buy myself a vacuum sealer and do it individually. I can already see myself getting a few more. These morphs are insane.