Couple of questions

Is this Net Present value ?

Do you publish the calculations that got us there (I could not see it)

There seems to be some sensitivity to a few key variables (down payment?) - is there a write up of the algorithm (in plain english :-)

But its pretty good - I just chucked in my UK prices and guesstimated equivalent rental, but its quite a shock - I expected to see rental as a more expensive option much much earlier and by a wider margin. its 20 years before you start saying - well thats worth it.