What do you think of the company (allwebnow) which provides dedicated servers with 30% discounts?
They offer that and it seems attractive for me.
Am I right?

You need to gather all the information about this company. Do not relay on advertisement & promo. Always check it's SLA & TOS.

And check other options. maybe somewhere you will be able to get that cheaper

I only rely on coupons to get discounts for domains and hosting.

I do not love companies which has coupons, Because usually companies are doing promos when sales became very poor... And of course try to make little google search and read TOS/AUP

That might be attractive - no doubts. But how that is reliable then

As I see allwebnow offers a lot of dedicated servers - which one the OP wants to have from them?
Think discounts are different on various dedicated servers.
Overall they look o'k for me.

Discounts that is is the way to attract new customers. Good and quality service that is the way to keep customers loyal

Codes is the way to have you as a customer. Another thing to keep you loyal

30% discount is huge, but it's better to compare with specs/price of other providers.

Almost host are giving discount from 15-30%.. So better check the reliability and features...even godaddy on of the best and reliable company giving always discount coupen upto 30%

I assume you need first of all check the reviews and then operate with the price. I assume that is much more important