Be thankful for increase in value (10)
I believe the answer is:
appreciate
I believe this is a double definition.
'be thankful for' is the first definition.
(synonyms)
'increase in value' is the second definition.
(I've seen this before)
(Other definitions for appreciate that I've seen before include "Feel grateful" , "Treasure" , "increase in price" , "Be fully aware of" , "Take full account of" .)