I guess the best and cheapest way to buy winter clothing here is to buy used ones from the thrift stores (is. Value village, goodwill, etc) I was just there earlier and found really good ones. I found a north face jacket for Under $30 and a high end Colombia (3 in 1 inner fleece and outer shell) for $50. That wud have cost over $250 new. They may not be the best but they will be good as starter winter kit.
I just don't see the logic of buying winter jackets in a tropical place like the Philippines. A good jacket is bulky and can honestly occupy half a suitcase and when I bought one there before, it was definitely not enough for -20, and useless when temp dropped to -30. That's without wind chill. At least in here the selection is better and you can load ur suitcase with more useful stuff instead of winter jackets