Belted Tunic

Belted Tunics are common around Skyrim, usually in dressers of the common folk of Skyrim. Nobles dressers or wardrobes you'll find inhabit finer garments.

Sometimes they will be availible to just take or it made have a red text that indicates it will be stealing. This can be fixed by simply doing a favor for the person who owns it.

Also with almost every other kind of clothing, save for a npc specific, Radiant Raiment sells common apparel for just a few septims.

Common clothes have little value, they do not count as armor and sell for very little. Likely while poking through bandits hideouts you'll find many of them along your journy.