It is fine, removing factory applied stickers ( Anakin offer ) is a crazy idea, price stickers IMO should stay as well.
Just in case you are using goo gone or similar : "Joe F "
Master Bookbinder whose resume includes restoring antiquarian books (some as old as the 10th Century) to near original condition as well as making his own hand-made paper, asking his opinion on exposing paper to Naphtha/lighter fluid or goo gone, as well as providing him context on the way it was being used to remove price stickers. I heard back from him (below is his response), and have another email out to a museum-trained paper conservationist:
"Any chemical treatment will break down the cellulose in paper causing it to first become chalky, then brittle and then disintegrate.
Naphtha is a derivative of petroleum and is used as a blending agent for high octane gasoline among its many uses....needless to say any idiot using it on paper to remove glue/gum, is just that.....an idiot.....The problem is that any short term solution that the seller uses is going to create a long term problem for the buyer with dire consequences.
I wouldn't consider the use of these chemicals as restoration or conservation, I would consider it amateur attempts with fatal effects. New Zealand authorities a few years ago banned all conservators from using chemical treatments as the years of use had shown that their very short history on paper is now disintegrating....,.,they were ordered to just make clamshell boxes to house their precious artifacts. Anyone who uses Naphtha on paper should be considered a vandal and collectors should not invest in such treated items......I think the term is "buyer beware".