Consumer in Feb 2013 produced a comparison of retirement villages charges which can be found here
http://www.consumer.org.nz/reports/r.../market-growth . In their table it claims that any capital loss on resale is paid by MET residents in addition to the up to 30% amortisation of original purchase price. RYM and SUM residents are not liable for capital loss (according to this table). In the table, the only other provider to charge for capital losses is BUPA.
I still have not seen current licence agreements. I imagine they can change at any time. In a static or declining property market, whether an operator has an additional charge for decline in value could have a material bearing on a prospective resident's choice of operator.