Rough value of 3.5 carat Opal

Hello folks, wondering if you could give me a quick estimate on the order of value of this Opal. Seller is in Bahrain and doesn’t know where in the world it is from since he buys wholesale from a mixed lot.

It weighs 3.5 carats. Seller is saying ~$400 USD. From my research, similar ones seems to sell for $55-$125 but since I’m new at this, I don’t know if I’m overlooking something.

What do you think? Thanks in advance!