I'd like to reg a domain in .asia extension with *******.com as they
offer BIG discount on this domain.
What do you think of this company?
Is .asia extension worthwhile? Is it recommended?

Can you provide those discounts on *******.com services?

They seem to be leaders by registered .asia domain names.

Which exactly domain extentions are you interested in? *******.com provides them a lot.

Recently I have seen that *******.com provides 6ASIA21 for their .asia domain extension.
I think this domain is worthwhile if your clients are from Asia.

I have seen that *******.com has also provided .asia.com - can this domain be profitable?

well it still boils down the .asia domain name.
but i guess it'll be a different situation than the .eu domain.
my opinion, it'll be in the near future.