Over-reacting to ebay auction?

Well, I’m still kind of new to ebay. And I may be overreacting, but I didn’t get what I felt was promised in this auction.
I bid on a 90 card set from Topps of The Maxx.
Here is the link: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=6127120473&ssPageName=STRK:MEWN:IT
To me saying 90 CD Set means it’s the set. But I’m missing about five cards. I should have written him; unfortunately I searched my gmail and I guess I never clarified it. So I’m wondering if I have any right to be upset? It doesn’t say complete set. But still, it sort of sucks to not get all the cards. Just wondering, would you guys leave positive, neutral, negative feedback?
I think I’ll ask him about it regardless; maybe he forgot some?
I guess I need to get better with these auctions. This is the first I’ve felt a little burned on (well, except for my Garden State dvd, STILL hasn’t arrived, but they said it takes a while so I’ll just wait and see…)
Thanks for any input you guys/girl [:haha:] might have.