Yesterday there was some confusion about a Poke Coin cost for transferring Pokemon from Pokemon GO to Pokemon HOME. Pokemon Co. has now released a statement to clarify the situation.
According to Pokemon Co., Poke Coins can be used to shorten a cooldown period when transferring Pokemon from Pokemon GO to Pokemon HOME. We don't know how much it will cost to shorten that period, or how long you'll have to wait if you don't pay. Hopefully more details are shared in the near future in order to give the full picture.