Can we still buy Mathcad 15 ?

The question is in the title!

I am playing with Mathcad Prime 2.0 trial and Mathcad 15 trial and Mathcad 15 seems to be more interesting for me.

I don't want to spend $1,500 US for Mathcad Prime 3.0 it is an unfinished product to me.

We are in February 2014.

Thank you, bye.

Pierre.