Answer:

priciest

Answer	Crossword Clue
PRICIEST	Most expensive
PRICIEST	Most dear
PRICIEST	Setting one back the most

PRICIEST	Like top-shelf liquor
PRICIEST	Least affordable
PRICIEST	Hardest on the wallet

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.