I went through a similar sweat a few years ago. I had the standard mish-mash of a few decent padded chairs, some metal folding chairs, and some odd ball wood chairs. It got to the point where players were almost fighting over who got the good chairs, and was a huge PITA. I needed some decent matching chairs at the lowest possible price point.
What I found were these padded, metal banquet chairs:
http://www.stackchairs4less.com/fd-bhf-2-gg.html
I got 16 of them at $15 a pop. I don't remember how much shipping was, but it was reasonable, and I believe I got them all shipped for under $300. I had them shipped to a store one of my players managed, since shipping to a commercial address was way cheaper than a residential address.
In order to come up with the $300, I just put out a tip jar, printed out a bar graph from $0-300, let everyone know where the money would be going and how it was in their interest to throw in some cash, and waited about 6 weeks for it to fill up.
And to your last question, no, it is not tacky in the least. Your the host, you get first pick of chairs. I also have a nice swivel office chair in my spot, because I'm the one who has to get up every so often to handle rebuys, cashouts, etc.. It's way easier to spin around and roll back than to stand up and slide, and since I do it 30-40 times a night, it was worth the $60.
Hope this helps.