Clear and off record properties

[Dan Green]

I have a list of clear and off record properties that im looking to wholesale,  but every time i look one up on my county appraiser website it states the last sales date as being 11/2016 or 10/2016 . Is this a bad list? I ask that because to me it seems it would be pointless to mail out to an owner who just bought the property last month. They obviously bought it to make something. Am i looking at this wrong? Please help all inputs are welcome