The Baby Sitters Club Classic books set of 4

Set of four classic the babysitters club books from the late 80s and 90s. #9 the ghost at Dawn’s house  #18 Stacey’s mistake #25 Mary Ann and the search for Tigger #35 stacey and the mystery of StoneyBrook All in good gently used condition. Somehow writing on the inside cover, frayed edges. Number 25 does not have the back cover. Will ship with USPS media mail