User confirmed in-game tooltip values:
spur=1, bevel=8, sprocket=16, cog=64, crown=512, sun=4096.
Chain is non-uniform (x8, x2, x4, x8, x8). My earlier guesses
(uniform x8, assuming Sun=64 Cogs) gave consistent but wrong
intermediate values. Now sourced from the mod's own tooltip, not
triangulated.
Plot prices at 100/250/600 spurs now mean roughly:
100 spurs = 6 bevels + 4 spurs (1 sprocket + 5 bevels + 4 spurs)
250 spurs = 3 cogs + 3 bevels + 2 spurs
600 spurs = 9 cogs + 3 bevels (... still small change tier)
User-side: edit PLOT_DEFS in plots.js to set real prices once the
spawn marketplace and economy scale are decided.
Matt