Thanks to @Riker [and @Groundpounder, and @Lewk, ...] on Discord , starting here.
@Groundpounder 1/x, 2/x, 3/x @Riker [p40], 4/x @Lewk
"stopped there."
"The gold amount changes per level."
[Assume $99.99, not @Lewk's joke $1.99 in crayon, unless posted here otherwise.]