Perfem does not vary much from state to state. This means the se for this coefficient will be large. New coeffs are 328.484 and -4.2191. The se of the slope will not change. In fact they tend to have opposite signs - consider a 2x2 matrix as a simple example.
More elaborate explanations are speculative and unnecessary.
This point has high leverage so we should check if it's influential in a given model and perhaps remove it if necessary. Pick the model with age, education, income and price - it has the lowest Cp statistic and is below the line indicating a good fit. The transform of the response differs in the two models, so the usual F-test cannot be done. Some wraps are significantly different from others. Only plastic wrap and mixed gas are not significantly different.