Resting places of variable cost (4)
I believe the answer is:
cots
'resting places' is the definition.
I can't tell whether this definition defines the answer.
'variable cost' is the wordplay.
'variable' indicates an anagram (a varied form of the letters).
'cost' with letters rearranged gives 'COTS'.
'of' is the link.
Can you help me to learn more?
(Other definitions for cots that I've seen before include "Babies' beds" , "Small beds" .)