Hello Mother Nature is usually a brilliant surgeon. Small gaps like this are not uncommon after upper eyelid surgery and generally heal quite well if you keep the area clean and moist and scrupulously protect it from the sun. Please avoid pulling up on the skin as you are doing...
It depends on if you have health insurance and your physician participates. Since you are in Philippines it is hard to answer that question. If it is payment out of pocket, it will vary per physician/office. Good luck.
These small milia can be permanently removed with focused laser, a very quick and easy procedure performed in office with only topical anesthesia. New milia could form in new locations. Changing your skin are could help prevent new milia.