AppraisrAppraisr
Accuracy

How accurate is the Nakamigos model?

Every estimate is benchmarked against real sales the model never trained on (a seeded 80/20 hold-out).

Median accuracy
95.1%
Mean accuracy
91.1%
Within ±5%
51%
Within ±10%
71%
Within ±20%
86%
Bias
+3.3%

Weekly median accuracy

Hold-out accuracy by week

Error distribution

Signed % error on recent sales (0 = perfect)

Recent sales vs model

The 60 most recent sales, each valued as of its sale date

ItemTypeDateSaleModelErrorAccuracy
#1697Human LatteJun 14, 20260.118Ξ0.114Ξ+3.8%96.2%
#12790Human CoffeeJun 14, 20260.720Ξ0.113Ξ+536.1%-436.1%
#389Human LatteJun 13, 20260.188Ξ0.111Ξ+68.6%31.4%
#10219Human BobaJun 13, 20260.104Ξ0.115Ξ-9.2%90.8%
#3373Human LatteJun 13, 20260.101Ξ0.115Ξ-11.9%88.1%
#2233Human LatteJun 13, 20260.145Ξ0.111Ξ+31.1%68.9%
#16277Human LatteJun 13, 20260.920Ξ0.110Ξ+738.1%-638.1%
#1886Human LatteJun 13, 20260.101Ξ0.111Ξ-8.7%91.3%
#1886Human LatteJun 13, 20260.104Ξ0.111Ξ-5.6%94.4%
#14049Human LatteJun 13, 20260.102Ξ0.107Ξ-4.6%95.4%
#11555Human LatteJun 13, 20260.200Ξ0.110Ξ+81.0%19.0%
#3347Human Pumpkin SpiceJun 13, 20260.100Ξ0.110Ξ-8.8%91.2%
#1886Human LatteJun 13, 20260.099Ξ0.111Ξ-10.3%89.7%
#19717Human BobaJun 13, 20260.099Ξ0.114Ξ-12.9%87.1%
#17885Human Pumpkin SpiceJun 13, 20260.099Ξ0.106Ξ-5.9%94.1%
#2714Human MochaJun 13, 20260.100Ξ0.115Ξ-13.1%86.9%
#3929Human LatteJun 13, 20260.100Ξ0.111Ξ-10.0%90.0%
#17780Human LatteJun 13, 20260.099Ξ0.106Ξ-6.7%93.3%
#14769Human LatteJun 13, 20260.100Ξ0.110Ξ-8.4%91.6%
#4809Human Pumpkin SpiceJun 13, 20260.100Ξ0.108Ξ-7.6%92.4%
#3347Human Pumpkin SpiceJun 13, 20260.100Ξ0.110Ξ-9.6%90.4%
#10138BotJun 13, 20260.155Ξ0.134Ξ+15.8%84.2%
#2557FrogJun 13, 20260.245Ξ0.160Ξ+53.4%46.6%
#15317Human BobaJun 13, 20260.102Ξ0.111Ξ-8.0%92.0%
#2127Human Pumpkin SpiceJun 13, 20260.101Ξ0.104Ξ-2.6%97.4%
#10259Human BobaJun 12, 20260.101Ξ0.115Ξ-12.3%87.7%
#11175Human MochaJun 12, 20260.118Ξ0.111Ξ+6.5%93.5%
#434Human LatteJun 12, 20260.124Ξ0.106Ξ+16.4%83.6%
#19916Human Pumpkin SpiceJun 12, 20260.103Ξ0.105Ξ-1.7%98.3%
#14769Human LatteJun 12, 20260.102Ξ0.110Ξ-6.9%93.1%
#8791Human LatteJun 12, 20260.102Ξ0.108Ξ-5.9%94.1%
#17129Human BobaJun 12, 20260.103Ξ0.113Ξ-9.4%90.6%
#2957Human Pumpkin SpiceJun 12, 20260.102Ξ0.109Ξ-5.7%94.3%
#2197Human LatteJun 12, 20260.101Ξ0.113Ξ-11.1%88.9%
#10655Human LatteJun 12, 20260.099Ξ0.114Ξ-13.2%86.8%
#4055Human Pumpkin SpiceJun 12, 20260.099Ξ0.108Ξ-8.5%91.5%
#10219Human BobaJun 12, 20260.099Ξ0.115Ξ-14.0%86.1%
#4019Human LatteJun 11, 20260.125Ξ0.117Ξ+6.7%93.3%
#10259Human BobaJun 11, 20260.150Ξ0.115Ξ+30.3%69.8%
#17129Human BobaJun 11, 20260.099Ξ0.113Ξ-12.5%87.5%

Method details on the methodology page.