The company (photonvps) has attracted me we low cost. I think this is quite possible to offer what is offered by them for such spec, the more so because they are narrow specialists!
Can anybody tell me if they really worthy of attention?

check their reviews to make sure. And you get what you pay for
Cheers

I believe you need to compare what they offer with what you need
That should match at least

They are quite new as there are not nuch information about them around

Consider all the other things also along with the low price. Their over all reliability support quality, uptime all that matters. Do a research on them first. Best of luck.