The Brain Preservation Foundation is an interesting enterprise co-developed by John Smart (Acceleration Studies Foundation) that’s offering a prize for researchers who manage to preserve animal brains in ways that would be suitable for humans and that keep intact the web of physical connections - or the connectome - that some believe to contain all of the information in both memory and thoughts. Brain preservation aims at locking in these connections against post-mortem decay.
Re “What level would the price need to reach before you shrugged and said: sure, sign me up?”
Well, one of the advantages of chemical brain preservation over cryonics is that it should be significantly cheaper. If cryonics costs a few tens of thousands (average of Alcor and CI costs), chemical brain preservation should cost a few thousands bucks. If so, sign me up now.