Definitely willing to work with you if you're interested in the big lots (aka I think combo deals are definitely something I'm open to).
To start with:
GTO (Great Teacher Onizuka)- all 25 English volumes. Was thinking if I could get around $100 or so plus shipping, I could justify picking up a Japanese set in exchange.
Ranma 1/2: all 36 original English volumes, the complete series. $150 + shipping. Same as above, would love to get this replaced with a Japanese set at this point, as I LOVE the hell out of this series, and figure this'd be a good way to finance things.
Bleach: Volumes 1-17, 27, 29, 30, 31-33 (in 3-in-1 form), 34, 36-39, 42-48, 50-55, 57, 58, 60, 61, 64, 67. $100 plus shipping.
Is This a Zombie?!- 1-8 (complete). $20 plus shipping
Will probably add some more assorted odds and ends over time as I figure some stuff out and look things over.
Akira Volume 1- $8 + Shipping
Annnnnd, to start adding to the assorted odds and ends:
All manga below this point would be $2 each book + shipping, but definitely willing to negotiate cheaper or hell, maybe even toss-in for if you purchase a bigger ticket item. Also, all English language:
Black Cat Volume 4
Mad Love Chase Volume 1
This Ugly Yet Beautiful World Volume 1
Maria Holic Volumes 1 and 2 (Tokyopop, and I think I have a little further I can dig up if anybody's actually interested)
X (the Clamp manga) Volumes 1-4, 6, 14
Gakuen Alice Volume 6
Yokai Watch 1-5
Fairy Navigator Runa 1-2
Cardfight Vanguard 1, 2, 4, 5, 7
Red Hot Chili Samurai 1
Code:breaker 1-2
Tokyo Mew Mew 1 (NOT the newer omnibus release, mind you)
Kamikaze Kaito Jeanne 1
Maid War Chronicle 1-2
Little Battlers Experience 1, 2, 4, 5
Pokemon the Movie: Genesect and the Legend Awakened
Oh, and a touch of Yaoi that I don't know what to do with because it's technically worth more than this, but I doubt I'll find a buyer, so...
Kurashina Sensei's Passion (1-2)- $15
I dunno, could be up for negotiating this one. Also will note that despite sounding like it from the title, IIRC this actually isn't pornographic.
And not manga, but...
New X-men, all 7 graphic novels of the Morrison run. $15 + shipping. Fully open about this... these trades aren't great by design. I believe 1-2 of them had the glue come loose enough that the cover separated from the actual contents of the book (though I'd still have and be able to ship all the parts). So this'd be a "buyer be warned" that these should probably solely be considered a means to read the classic, awesome run (which is great, and I still did read it through that way).
Avengers vs X-men Companion Omnibus: $20 + shipping. Some solid comics in here IIRC, and it's a great looking, big old book... but I also realize it's probably not the most enticing item, hence the price.