Replying to Cracked ski boots, do i need new ones ? or can i get by

i have some high end ( or used to be ha) rossi ski boots, not sure what model but there like 3 years old and are the good ol 4 buckle design. on the side of one of the boots the plastic molding cracked bout 6-7 inches horizontally on the inside of the boot , part where it faces inside , not the side every one can see. but regardless would epozy with a ghetto clamp set up get me buy another season ? boots just sooo damn spendy . thanks for any feedback.