Barely three weeks after slashing its prices in order to qualify for federal tax incentives for clean vehicles, Tesla has increased the prices of some of its best-selling electric vehicles. At the beginning of January, a five-seat Tesla Model Y long-range crossover cost $65,990; on January 12 Tesla dropped this to $52,990. Now, that has gone up by $2,000 to $54,990. And the Model Y Performance saw its price drop from $69,990 to $56,990; today that same EV will cost $57,990.