Cheaper alternatives to Shelly EM?

Hardware
1

Hi everyone, do you have any suggestion on power meter sensors working with HomeAssistant like Shelly EM but cheaper?
Even DIY option would be acceptable if the suits in a breaker box

2

Shelly is ESP8266 or similar. So buy one of the ESP range and flash with ESPHome. CT Clamp Current Sensor — ESPHome

They are all DIY