I called to get information on the tank he has on this posting, he said it was a "commercial" tank but wasn't sure how large, estimated 150 gallons (He will call me tonight with the exact dimensions) and said he has over $500.00 in "accessories" including filter (looks like a sump in the picture?) and lighting.

On to my question,
He said the tank wasn't glass but he had a bit of an accent so I couldn't make out what he said it was. What does it look like to you? Acrylic? Something else? And what would your opinion be on better/worse/equal to glass?

I'm thinking of offering him $150.00 for the lot (He didn't have an asking price so why not go for a killer deal, right?) Do you think he'll laugh at me?