I am selling some websites and I have shown the picture of my adsense with impressions and earnings, somebody is asking me what my CTR and CPC is, can I tell them an average, or is that breaking TOS? I know you can't publish pictures with all the stats in, but what about telling people an average?
I think it's safe to tell them. You really have a moral obligation to tell them if they're going to buy your sites.
obviously you have to disclose to the person who is willing to buy it from you! so if you find them serious then i find no harm in it!