Has anyone bought one of these? I saw that they were offering around $85-100 off retail price for an open box ipad. I am worried that someone returned one of these because of a screen defect or issue with the ipad. I know a lot of people buy ipads and test drive them and then return them because of form factor or just regular buyers remorse. Does anyone have experience buying an open box ipad? *Edit - I just saw another thread about this. Feel free to delete.