Tank price and weight

[mr_alberta]

Hi there,

My friend has this old fish tank lying around that I wanted to purchase for my mom's goldfish but I don't know how much I should offer them for it.

It is a custom made tank, the dimensions are 36"L x 24"W x 36"H. Its a glass aquarium and its probably about 10 years old. I don't think it had a light or anything though. How much do you think is a fair amount for the tank? It is very clean and has been gathering dust for about 5 years now. Also, how much do you think this puppy weighs? 300lbs?

Thanks.