Not necessarily.
CGM armbands vary considerably in their design, materials and level of protection. Some are simply elastic straps worn over the sensor with no protective cover at all. While these can help keep a sensor in place, they offer little protection from knocks, bumps or pressure on the sensor itself.
Where a cover is included, the design can differ significantly. Many lower-cost products use 3D-printed covers, which may show visible print lines, rougher edges or variations in finish. Others use moulded covers designed to provide a smoother and more consistent finish.
Strap materials can also affect comfort. Elastic straps often need to be worn relatively tight to keep the sensor secure. Neoprene straps are generally wider and more supportive, meaning they do not usually need to be worn as tightly to provide protection.
Durability, appearance, adjustability and overall comfort can vary considerably between products. For some users, a lower-cost option may be perfectly suitable. For others, differences in comfort, finish and long-term wear become more noticeable through everyday use than they do in product photographs.