Labels are readily available.

You can save quite a bit with off-brand labels (I use Dymo Compatible 99019 LabelWriter Self-Adhesive White 1-Part Internet Postage Labels, 2-5/16" x 7-1/2" (4 Rolls, 150 Labels Per Roll) instead) and they work just fine

You can save quite a bit with off-brand labels (I use Dymo Compatible 99019 LabelWriter Self-Adhesive White 1-Part Internet Postage Labels, 2-5/16" x 7-1/2" (4 Rolls, 150 Labels Per Roll) instead) and they work just fine