So my wife has yet again cracked her screen on her iPhone. I just dont see the point in fixing it since apple charges over $300 for out of warranty repair. I only owe about $250 on it so I thought maybe selling it and upgrading her to an 6S+. Are aftermarket screen replacements any good? Or should I just sell the phone and pay it off? How much is an ATT 128gb 6+ worth with a hairline crack?