Floor cover appears in the estimates (3)
I believe the answer is:
mat
'floor cover' is the definition.
(I know that mat is a type of floor cover)
'in the estimates' is the wordplay.
'in' indicates the answer is hidden within the clue.
'MAT' is hidden in the letters of 'estimates'.
'appears' acts as a link.
(Other definitions for mat that I've seen before include "dull finish" , "Unglossy floor pad" , "Small rug" , "Not glossy" , "Small protective floor-covering" .)