buyer has no representation. is seller still pay 6%?

[Itay Heled]

Hello BP members,

if I am the  seller, and buyer choose not have their own real estate agent , (yet didn't sign with my listing agent ) m the , is it still a common thing brokerage will charge me , the seller   the  entire 6%?

and if so, are they legally  representing buyer in the deal?

thanks!