I assume some places have return policies on screens. Shipping is the issue. That will cost if it isn't local.
I agree with Vaan, I don't think the screen can have a lot of effect on ghosting for Active 3D. The projector/glasses is the source. With the Sony projectors (at least on my 55) there is a brightness setting on the glasses that affects ghosting. I don't let ghosting bother me as much as some people so I don't mind it on the Sony, but it is clearly worse than my old Epson 5010 for ghosting. Technology is part of it. DLP's tend to have less ghosting yet.
The other factor is the glasses. I tried a few different brands and the Sony glasses, in addition to being the most expensive, were the worst at ghosting. Give the Samsung 5150 glasses a try. They are crazy light, lighter than passive glasses from the theater, and have less ghosting than the Sony glasses, and they are super cheap. I don't know how Samsung does it. They are a big reason I am holding off on going passive.