Pete: I actually got that price through a dealer. There are several Haulmark dealers on the Wasatch Front of Utah, so I'm sure that helped. I did go to all three, and their quotes were all within a few hundred dollars. There's also some other brands about 20 percent cheaper, but to me, they were built 30 percent less-rugged. Haulmark seemed like "middle of the road" pretty good quality. Not the best, but certainly not the worst.
As for a 7X12 with a ramp, we did look at those pretty seriously too. While that extra foot of width was very attractive and noticeable when we walked inside, I found that they all come with dual axles, and that adds about $800 right off the top. The 7-footer also had a wider footprint behind my F-150, and I wanted to keep it about like the trucks for tight places and better aerodynamics in the famous winds of Wyoming.
But even the same trailer I bought, 6 X 12, only with a dual axle, was about $800 more, which is why we decided we could live with a single. My preference would have been a dual axle for sure though. Also, with Haulmark, the ramp door is an upgrade, so that's probably adding a few hundred.
Those are likely the differences you're seeing between my 6X12 and a 7X12 with a ramp. Dual axle and ramp door is an upgrade.
As for my idea being well thought out, yeah, I did think about it quite a bit from about mid-July until ordering in October. However, almost every "thought" I had during the process stemmed from something I saw or read on this site. It's pretty much turning into a copy-cat job, with a few little personal preferences and short-cuts tossed in.
I really admire some of the building and handi-work many on here put into their trailers. I'm just not that handy when it comes down to cutting, screwing, leveling, supporting, nailing, and designing. Its just not my "thing", so I'm buying my way around most of that, all but the basics.

Some of the work on here is just gorgeous though.