I have an idea to create portal in esperanto . There no such thing now on the internet . There are about 2.000.000 esperanto speakers in the world and I hope it will be lucrative .

What is better to creat now one or to buy one wich is now out of use ?

Between the two options, you'd have to weigh the costs, amount of work to get up and running in your desired timeframe, and your technical prowess to build from scratch. However, I'd try to ascertain why the one is now out of use as it may be telling as to the market for such a site.

This is that site

Ĝangalo - La mondo en Esperanto

As much as I know the story owner bancropted when he lunched television in esperanto . Accordig to there statistic it had 3.000 visiters per day .