In Lahore, I got 15 Kg LPG filled at 100 Rs per KG (Punjab Gas near Yateem khana chowk Lahore) and i am getting 24km+ per Kg. LPG is expected to come down to 85 Rs per KG in coming weeks. I wonder still ppl prefer to burn in the heat for CNG.
BTW i am using my CNG kit for LPG. No modification except the extra water pipes. And i can revert back to CNG with same kit, i will just need to remove all LPG present in cylinder. I have tested this twice. PPl say that you need to wash your cylinder, i never did. But i do not recommend going back and forth in CNG and LPG. Stick to one.