Well I took a look at some of the plots in Brandon's Shelf. One of the plots closest to the arrival pad jumped almost 5g in price to 15g and some change.
What I find very interesting, the plot close to, but on the other side of the gate jumped to a whopping 23g and some change. and before you ask, yes, the plots are all of the same size.
I can see a relationship between price of plot and proximity to the arrival pad; the close to the pad the easier it is to tote your disk and build. So it makes sense that the of the plots I refer to above, the one closest to the pad jumped in price.
Yet the other one, which is a goodly distance from the arrival pad, and yes, as the crow flies is close to the gate...I can't see why it jumped in price so significantly.
Most of the time when looking at plots, I could care less about outgoing gates (Bristugo being an exception to this general rule). I care about how close or far away the arrival pad is...that has a direct bearing on how easy it is to build...ie...disk toting time.
Speaking of Bristugo...I noticed that the 2 plots right next to the gate system jumped from a few hundred silver to 2g and some silver to 3g and some silver...makes perfect sense considering the proximity of both gates and arrival pad...though they are only 40x40 and 35x45 (or there abouts)