You clearly had a significant cost at $5k, but that's a fairly extreme outlier. The capital outlay for charging for the vast majority of folks will be tiny. It cost me $150 to have a 14-50 installed. As long as you've got an open breaker spot, you should be fine. The fact it's another 50 amp shouldn't matter as long as you don't simultaneously run your dryer or oven or whatever other 50amp item you already have in your house. Even a 30amp should be sufficient for overnight charging.To install a 40 amp 240 volt outlet in the garage of my previous home cost me over $5k due to required service upgrades. The purchase price of a Tesla with the additional capital outlay for charging will certainly be too steep for so many.