[slayed0]

Or just buy a dredger and make one

[brador]

Seriously, how much would it cost per square foot to build an island?

[ctdonath]

More a matter of cost per cubic foot.

Have to find someplace where the seafloor is close to the surface, then dump enough volume of dirt on it to reach a viable altitude.

[slayed0]

I'm sure it would cost a shipload...