How would you do that ? Making any website ranked in top 10k is not that easy and 0.25 btc seems really cheap to me for such great rank
But my question is this is really safe ?
How would you do ?
Its is 10k - 50k. You would rank in 25 to 50 days. If you want your rank to be stable you have to purchased the service every month. My advice do not use this service if you have adsense ads on your website.