admin for example if im insure 1btc on early jan 2018 price around 20k
so can i withdraw now with same value in usd after deduction for fee?
I am not an admin, but I will try to answer your question.
Options are usually traded for short periods of a few days or weeks. Trading options for more than a month is very risky and there is no point.
I realized that this means that you simply can not get an option on long term perspective. Most likely there will be a kind of limit.