Costlines or Costliness: How To spell?
The word Costlines is misspelled against Costliness, a noun meaning "The quality of being costy; expensiveness; sumptuousness."
Costliness has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  costline-s  Correct Spelling:  costline-ss 
Find more incorrect spellings of Costliness to spell right way.