Thanks so much, this really explain it all
Anyway, the IT8 target will be sent free to me once I order the Profile Prism? One is enough?
Would you mind creating one ICC profile for me if I already have the IT8 target (IT 8.7/2 Reflective Scanner Target on Kodak Professional paper) to see if it will really work or not? I am sorry for my skepticism.

I tried print both in color and greyscale.

I am sorry I might have confused you.
I have no profile yet and what I am using is generic profile provided with the machine only, that's why I asked if profiling through Profile Prime will fix the color cast issue. If it does, it will save me a lot for getting the device, so if you can help send me the target to print and scan back to you to help create one for me will help me decide, please.

Edit: Is the target soft copy or hard? What is the it8 target actually? Maybe I am asking too much.

I using Photoshop CS5 with printer manage color.
I am printing in B&W because I can see the color cast shadows easily.
I also tried without vivid, but still the prints come out  not B&W, except for one testing as you can see 'printed using Plain Paper as profile', but this cannot give quality picture prints.

I really want to use Profile Prism, but before that I have to make sure it can really improved at least one of my printing and that I am asking if someone here can help send me the target so I can print and scan to them to create one profile for me to test - I hope you can help.

I so very happy to get your reply and this means a lot to me.

I am pretty new to Profile Prism - just know it from a friend recently.
I really want to try it as some said it works, and some there said it's not that simple. I have Canon LiDE 110 scanner and VueScan - will these meet the requirement?
I am running a small home printing shop here in Cambodia and I am using many types of paper and a few inks too from Inktec and generic one (no-name) as not many customers want to pay much either. Just currently I am switching to pigment inks too to give more archival quality, but I have trouble to make the color right - honestly I also can't get accurate colors with dye ink either resulting red and green shadow cast

Here are the pictures I tried printed in grey scale which I believe can be improved and corrected with the right profile: http://www.flickr.com/photos/soweic/9334523034/
1. Top left is printed with Epson 1390 and pigment ink using provided Epson Glossy profile (you can see the magenta shadow)
2. Top right is printed with Epson 1400 and Inktec dye ink using provided Ultra Premium Photo Paper Luster profile (you can see the greenish cast)
3. Bottom left is printed with Canon MP600 and dye ink using provided Plain Paper profile (it's the best grey scale I can get, but using plain paper profile is limited which the picture printed is not smooth and high quality though choosing Fine)
4. Bottom right is printed with Canon MP600 and dye-ink again using other profiles rather than Plain Paper! (All profiles beside Plain Paper - Fine, I got all sepia look! - wasted 20 photo papers   )

Is there a way I can ask for one ICC profile be made here before I can plunge in to get my own Profile Prism?

Thanks in advance for all the helps.

P.S: I am also looking for a used calibration device to calibrate my LCD.