Cracked iPhone 5c screen, can I trade it in for an iPhone 6?

So the corner of my iPhone 5c screen is cracked and we thought maybe we could trade the cracked phone in (still works perfectly fine) and get an iPhone 6 for maybe like an extra $100 or so but we re not really sure if they do that… But if they do, then how much extra money do I have to put in to trade in my cracked iPhone 5c for an iPhone 6?

Dsadsd

Around $400-$500 most likely, iPhone 5Cs are drastically cheaper because of their plastic ba kings, iphone6s are double price

At most they would give you a 10% discount off the new phone.