It was, specially in two situations: wealthy = educated elites, and in the “border” between the Latin and Greek areas of influence. Image
This tomb fits both criteria. Strikçan is ~100km to the east, a bit to the north of Dyrrachium (modern Durrës), so it’s right in the border. And there was stuff like textiles woven with gold, that Gellianos guy was probably swimming in money.