| value | Std. Error | Z value | P value | |
| Intercept | −205 | 18.286 | −11.19 | 4.43 × 10−29 |
| Iprice | −0.216 | 0.027 | −8.03 | 9.72 × 10−16 |
| Dprice | 8.88 | 0.543 | 16.37 | 3.28 × 10−60 |
| ReadNum | 0.499 | 0.021 | 24.59 | 1.73 × 10−133 |
| BidNum | 0.811 | 0.153 | 5.31 | 1.07 × 10−7 |
| BuyerCre | −0.007 | 0.003 | −2.31 | 2.07 × 10−2 |
| Guarantees | 0.005 | 0.002 | 3.29 | 9.91 × 10−4 |
| Qualif | 10.5 | 2.079 | 5.05 | 4.36 × 10−7 |
| DescribNum | 0.349 | 0.017 | 2.59 | 9.58 × 10−3 |