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G$ --> DND GP

A GURPS $ is worth 1.27 D&D 5e SP, which is interesting because in GURPS Dungeon Fantasy, the typical $1 coin is a silver piece. And a D&D GP is worth about $7.87 in GURPS.

So, where does that come from?

A while back, I cautioned someone considering using (among other things) GURPS Renaissance Venice: Merchants of Venice in a non-GURPS game that prices listed in the extensive lists of trade goods were expressed in GURPS $, which might not have obvious conversions into other game systems. But if one wanted to convert GURPS prices into D&D or vice versa, how would that work?

It crossed my mind to take a "basket of goods" approach. Economists measure inflation not by picking a single commodity, like the price of gold or oil or wheat, and seeing how that changes over time, but by taking the combined value of a set of common commodities. This provides a more comprehensive picture of the cost of living. Perhaps gas becomes less expensive while the price of wheat rises, resulting in little or not net change in total living expenses. You need to look across commodities to get a better idea of what's going on. 

So instead of calculating a CPI (Consumer Price Index), I needed to assemble an API (Adventurer Price Index). What goods are most relevant to the cost of living for a dungeon delving adventurer? Why, adventuring gear, of course! So I started with some basic adventuring gear from GURPS Dungeon Fantasy 13: Loadouts: minimal delvers kit, group kit, fighting cleric, medium knight (with sword-and-shield), basic thief, and scholarly wizard lenses. For comparison, I downloaded the D&D 5e SRD from dndbeyond and combed through the equipment list. Some equivalences ended up being rough approximations. For example, the GURPS armor was by-the-piece, while D&D armor is basically full suits. The SRD doesn't have some tools and other mundane gear like canteens, so I had to find similar rather than identical. I downgraded some of the fancier bits of GURPS equipment (the cleric's fine mace and the wizard's elaborately decorated staff) to more quotidian versions. And some stuff just doesn't track, like some of the GURPS potions, so I excluded them.

What I ended up with was a value of $3587 for a basic set of adventuring gear in GURPS for an equivalent value of 456.05 GP in D&D, which breaks down into the conversions above. So if you're a D&D player, there's your conversion factor for stuff in GURPS.

 

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