Remember, having an autopsy is a big decision to make, it will affect you and your partners whole future, or lack of it.
As a couple, you should decide if it's the right move for you, but with £5000 worth of savings to be made don't think too long and miss out. You will also save thousands by not getting a mortgage or having expensive children to look after for bloody years.
Just before the euthanasia process (pushed down the stairs) if one of you should change your mind, and we had not arranged a secret opt-out for you (a safety word system), we will carry on regardless, this is a joint offer* and we are not prepared to go back on a contract just because of some petty last-minute thoughts, although we are prepared to take the mother-in-law in lieu.
*if both of you secretly opted out we will still dispose of one of you, usually the ugliest.