Call:
lm(formula = price ~ age + nbids + interact, data = gfclocks)

Residuals:
     Min       1Q   Median       3Q      Max 
-154.995  -70.431    2.069   47.880  202.259 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept) 320.4580   295.1413   1.086  0.28684    
age           0.8781     2.0322   0.432  0.66896    
nbids       -93.2648    29.8916  -3.120  0.00416 ** 
interact      1.2978     0.2123   6.112 1.35e-06 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 88.91 on 28 degrees of freedom
Multiple R-squared:  0.9539,    Adjusted R-squared:  0.9489 
F-statistic:   193 on 3 and 28 DF,  p-value: < 2.2e-16