Dish that's oddly priced (3)
I believe the answer is:
pie
'dish' is the definition.
(I've seen this before)
'oddly priced' is the wordplay.
'oddly' means one should take alternating letters (letters in odd-numbered positions).
The alternate letters of 'priced' are 'PIE'.
'that's' acts as a link.
(Other definitions for pie that I've seen before include "Type of chart" , "what to cook for dinner?" , "Pecan or blueberry dish?" , "Pastry-covered dish" , "Food baked under pastry" .)