Posting and rental fee

Hello I surely agree for the posting fee, but did not understand the $99 that you have mentioned when rented out. It's a little vague the way it is presented. "For entire rental period You'll be renting 7 nights, at $450/night (USD). Easy, secure credit card payment You pay just a $99 success fee when rented Receive payment two days after your guest checks in Use our no-hassle rental agreement".

Is this an extra fee even if Redweek does not get involved with the renting and handling payments? I will wait for your answer before posting my units. Thank you Harout