For comparison (and possibly information purposes), today my Mrs bought a used iPhone 8 Plus from her friend who owns a mobile 'phone shop. She paid 10,000 baht. She doesn't understand about back-ups or clouds. I'm not permitted to touch her 'phones. The shop transferred everything across from her old 'phone for no extra charge. At home my stepdaughter was helping her set up an Apple ID. The 'phone objected saying; 'Too many Apple ID's created'. Both Mum and daughter looked at me. I said I didn't understand and left it with them!