Thermal printing means no ink. The difference is label size and who supplies them.
Verdict
DYMO for address labels and key tags, Rollo for anything 4 by 6. Both are direct thermal, so neither uses ink. The important difference is supplies: the LabelWriter 550 uses automatic label recognition and is designed around DYMO's own rolls, while the Rollo takes generic 4 by 6 stock from anyone, which is cheaper per label. If your job is mailing labels and key tags, the DYMO's label range fits better. If you print shipping labels or large tags, the Rollo does.
| Rollo USB Shipping Label Printer | DYMO LabelWriter 550 | |
|---|---|---|
| Label size | 4 by 6 shipping stock | Address, file, name badge, and more |
| Ink or toner | None, direct thermal | None, direct thermal |
| Third party labels | Yes | Restricted by label recognition |
| Cost per label | Lower | Higher |
| Best for | Shipping and large tags | Mailers, files, key tags |
| Price | Around two hundred | Around one hundred and forty |
You print a lot of 4 by 6, and you want to buy label rolls from whoever is cheapest. The Rollo is fast, built for volume, and generic fanfold stock costs a fraction of branded rolls. For an agent mailing marketing pieces in quantity, the running cost difference adds up faster than the higher purchase price.
Check Rollo USB Shipping Label Printer on Amazon
You want address labels, file labels and key tags from one machine sitting on a desk. The 550 is compact, the label range is wide, and automatic recognition means it knows what is loaded. Be aware that this generation restricts third party labels, so factor DYMO roll prices into what the printer really costs you.
Check DYMO LabelWriter 550 on Amazon
Direct thermal has no ink, so the image comes from heat sensitive paper and it does fade with light and heat over time. That is fine for a mailer posted this week and poor for a key tag sitting in a sunny window for a year. Use a laser printed tag where longevity matters.
If you mail regularly, yes. Sheet labels through an office printer waste part sheets and jam, and a thermal printer prints one at a time on demand with no ink cost. If you mail twice a year, sheets are fine.
Both can print shipping labels generated by carrier or marketplace software, which is where the Rollo's 4 by 6 format is standard. Confirm compatibility with the specific service you use before buying.
Comparison based on published manufacturer specifications and the general consensus of owner reports. We have not tested these units side by side. Confirm current prices and specifications before buying. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Deciding on a specific model? We review the Brother DCP-L2640DW review for real estate agents, Rollo USB shipping label printer review and Dymo LabelWriter 550 review in full.