If you care, you will take time to explain to the elderly affected what this all means.
The flat in question has an existing loan of $258k. It is not fully paid-up.
The replacement flat will need a $187k cash payment after all factors taken into consideration.
In other words, the owners concerned are exchanging their old flat with 56 years of lease left and a loan repayment of $258k for a brand new flat with a 99-year lease and a loan repayment of $187k.
One must also take into account that the total cost of the new flat include an additional 43-year lease compared to the old flat.
A point to note is that it is unlikely that this home owner (photo) is a senior as he has a high outstanding loan of $258k AS WELL AS $186k available savings in his CPF.