There seems to be a communication gap between China and the DIY. Last I heard, it was down to 40 kW and up to 80 Kg. I think there was one DIYer here who bought into a Chinese BLDC. Put it in his car. The inverter (controller) failed almost immediately. He rebuilt his inverter and runs it with acceptable performance, IIRC.
BLDC always has been a misleading and poor choice for the system. Basically, when you run an AC motor from a battery (DC) you need an inverter (DC/AC converter). All commonly used inverters are 3 phase. So need 6 phase legs, meaning 6 switches (IGBTs or MOSFETs). This is true whether the motor is an induction motor or a permanent magnet motor. The PM motor can be driven by the inverter with different shaped AC waveform. If it is a sine wave, sometimes they call the motor a PMSM, Permanent Magnet Synchronous Machine. If it is more of a square wave, they can call it a BLDC, Brushless DC motor. Big deal
So the difference is that the induction motor has a cast rotor and the PM motors have permanent magnets on or in the rotor. The stators pretty much look the same. On an equal playing field, the induction motor should cost less due to magnet cost. And the inverters (controllers) should cost the same. Some say the PM system has an efficiency advantage. Some say the induction motor has a control advantage. I say it doesn't amount to much and either can be suitable for an EV. I happen to favor the induction motor. That's what I'm used to. And I never want to try to disassemble the rotor from a large PM motor, in case I needed to change a bearing or something like that
The two leading manufacturers of AC systems suitable for EV are UQM (BLDC) and ACPropulsion (Induction). Both offer 150 kW systems for approx $30,000. Neither will sell to John Q. Public.
Right now, anything else you see is "want-to-be" advertising. Buyer beware