Without a picture I would say it isn’t Sugilite based solely on the price. A lot of Sugilite being sold is actually very light – a matrix of lilac/lavender in white, and I have seen some Sugilite that is almost fuschia and semi-translucent/gemmy.

However, I’m always suspicious of qualifying words in front of a stone. Have you asked any of the dealers if this is genuine Sugilite?