I have a friend in Davao city that got her annulment one month only whcih her lawyer she got filed it in cotabato city. she spent 50,000 pesos only plus little expenses on papers or docs..it reach almost 70,000pesos..thats the cheapest i knew.. some lawyers in davao asking between 100,000pesos the most 150,000pesos.It wl take 3 to 6 mos...Just a little suggestion,dont give whole amount first, usually lawyer wil accept deposit only.If u hv the money already just try to keep it urself and send little by little, pls not all to avoid regrets.