So i saw a few threads like this but most tried to compare septim to US dollar or something similar, which i think is impossible, what i am theorizing about is how much is a septim worth in universe, what prompted me to think about this was that i found "dead lovers camp" recently, and read the diary, the woman says her lover has been putting money away for some time to pay for them to elope, he stashed it in the hollowed out log in the back of the camp, all 30 septims. The general trend seems to follow this, gold ingot for example is worth 100 septims, silver one is 50. Food items rarely exceed 3-4 septims, and while this may seem overpriced following this logic one has to remember that food it middle ages was a valuable commodity, it was hard to grow it and even harder to transport it, especially in a climate such as Skyrim. Another thing, books, in middle ages books were fairly valuable, since they were written by hand, Skyrim books range from 3-5 septims up to about 100. And most houses in Skyrim are relatively cheap in comparison to real houses, who ever heard of buying a house or a flat for 8000 $, yet you buy one in Skyrim for 8000 septims. And then there are various treasure troves, both tied to missions and those not tied to missions, i recently finished "Lights Out" quest, my reward, about 150 septims worth of gold and Ebony ingot, that all form a big galley. Now of course one may well dismiss this all as game mechanic but it seems as though septim is in fact rather valuable coin, its just that a player often deals with high value items such as Ebony gear and such.