It was $66,000 before the increase and $68,000 after. You are off by $1,000 but I get your point (maybe you included referral, but then your 75 price should also include the referral for fair comparison). What my point was is that the 60 was already at $68,000. When dropping the 75 price to $69,500 they added standard glass roof and power liftgate, so if we value those at $1,500 Tesla effectively dropped the 75 price to the same level as the 60 price at the time (which was after the Nov $2K price increase, yes). If 60 was a break even before the November increase, then after the increase it was making money. Offering 75 at the same price doesn't make any more money, actually less because some people did buy 75's at higher prices when 60's were available.
Btw, even if someone got a 60 before the increase with glass roof and power liftgate, they would have paid $70,500 (glass roof + PUP for $4,500), which is $1,000 more than current 75. So, for $1,000 more they'd get the bio defense mode, multi-position headlights, fog lights, and accent lighting but 10KWh less usable battery. If you compare exact apples to apples and upgrade the 60 for $2K and add $3.5K to the 75 (so identical cars in the end), then the people who bought the 60 pre-increase and upgraded for $2K, saved $500 on a 75 with glass roof and PUP. Those who got a 60 after the increase and upgraded paid $1,500 more for 75 + glass roof + PUP than it would cost today. There were other savings available last year if you didn't want glass roof, or if you wanted leather with ash-wood only, but that's just options that went away, not related to battery much.