I have a twofold theory of why many folks tend to start off with lower end I^2 devices but eventually upgrade to higher performance equipment over time. The context of this post is civi, as I have never been .mil or LE due to PDQ 30 years ago.
The first factor is obvious… pure economics. NV is not at all inexpensive, and it is difficult to pony up some serious coin for that which one is uncertain as to how often or even how at all they might make benefit from it. It is also intimidating technology with lots of jargon, and each tube is unique to further complicate things, like shopping for your fiancee’s engagement ring. While some folks have more discretionary income than others, the bottom line is that the “good stuff” ain’t cheap.
Moving to the second consideration.
As humans we are conditioned to not being able to see as well at night as we can during the day.
When an individual initially starts using decent I^2 such as Gen2, the focus tends to be on the things that can now be seen which were previously not visible to the naked eye. I think of this as the "ooh, aah factor". The first time that I looked through a Gen3 years ago, my reaction was along the lines of, "I expected it to be good, but not this good!" That sentiment has been echoed numerous times when I have demo'd gear for others having no or minimal previous experience with such devices.
The better that one becomes accustomed to the capabilities of the technology, a reasonable assumption seems to mentally evolve and the focus shifts from what can now be seen to more importantly what still cannot be seen at all or cannot be seen clearly enough to ID. That is when the realization of the higher performance devices really making difference sets in, and the user understands the increased cost.
Over the past few months, there have been many new members posting in this forum, and that is a spectacular testament to the wealth of information being exchanged! I suspect that a percentage who genuinely appreciate the technology will be upgrading over time as is not particularly uncommon.
Everyone is always after a “bargain” me included, but as a cautionary note to the newer users, some information about getting reliable high performance for low cost doesn’t add up, and the buyer should always beware of any information source on the intraweb, including this post.
Some suppliers over promise and under deliver, while some others under promise and over deliver. This is true for almost all market segments, not just NV.
Ask questions, lots and lots of questions. If you don't receive satisfactory answers, ask someone else.