Considering the relative difficulty of making that money outside the first week of a patch cycle, I'd hesitate to. Again, I don't disagree that current placard costs are a relic of another age, I just think yours are too high.

ARR placard costs also had some gradation by server and was originally intended to be costs for multiple people pooling their money, among other complicating factors, so drawing that cost straight to the present without alteration is a fraught concept.

Also, comparing it to FC sales is a little perilous because, again, people are often buying those in search of either the 100% guarantee of having a house which otherwise does not exist in the current system, or in search of a return on their profit. Even then, you're not likely to get anywhere near 40m on a small outside of the hyper-congested or hyper-desirable servers. In fact, your prices are higher than I've seen for everything outside of dream plot mediums on Balmung/Gilgamesh/Mateus.