Sailing-boat raised in price - what a sauce! (7)
I believe the answer is:
ketchup
'what a sauce' is the definition.
(ketchup is a type of sauce)
'sailing-boat raised' is the wordplay.
'sailing boat' becomes 'ketch' (type of sailing boat).
'raised' becomes 'up' (similar in meaning).
'ketch'+'up'='KETCHUP'
'in price' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for ketchup that I've seen before include "Red sauce" , "Spicy tomato sauce" , "Piquant sauce, often tomato based" , "Relish" , "Sauce made largely of tomatoes" .)