[mindvirus]

Presumably I'd be able to buy it back at $0.60 on the dollar since that's what the market value of a low interest mortgage would be on today's market of 7% mortgage rates.

I'd want to do it so I could sell my place and move. No doubt if I sell my place now, the bank is just taking that money and lending it out again, making a profit on the difference in rates.

[patrickthebold]

Yes, but that boils down to changing the terms of your loan in your favor.

You probably should ask yourself: How much of a premium on your mortgage would you have paid to have the option to pay it off at market rates if rates happen to go up.

A similar example: in the US, typically loans have no prepayment penalty, but in practice you are paying for that option. I'm theory you could get a lower rate if you agreed to a high fee if you prepay.

I think it ends up not being worth it for lenders to give you so many options when picking your loan terms, simply because lots of people won't understand the subtitles/there's not much demand for those products.