Dota 2 items

http://gyazo.com/78c26f6a54618f73fc30266dcd47290c

One of my friends decided to quit and gave these to me, he said there extremely rare. 4 of the items only 1 exist of each. I was wondering how much they would be worth.

Corrupted Ancient Crescent
Autographed Eki Bukaw Wand - Off-Hand
Auspicious The Boar God's Honor Set
Inscribed Oblivion Headmaster Shoulders
Inscribed Runed Ailettes

1 Of them is just worth 23 cents but I asked another friend and he said i could get about $200-300 off of these. True or?

 

There's a common scam with DoTA items valued very low or very high and people try to trade/sell them and say they're "Super Rare," do some research. I'm sure the wiki will tell you pretty simply.

 

Thanks I just didn't know, I don't really play dota so there no use to me.