Expense of turning around design (6)
I believe the answer is:
outlay
'expense' is the definition.
(synonyms)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for outlay that I've seen before include "Spending" , "cost" , "Understood only by few" , "Expenditure on something" , "Disbursement" .)