I had a cracked screen. It's faster for them to replace the whole digitizer so it cost me 220 for part and like 54 labor. Samsung galaxy s7 edge. The removal of the glass is a pain and you could potentially damage digitizer so that's probably why they did it that way.
I'm not sure about just a screen, but I've had my s6 digitizer and screen replaced and it was $200. Just a screen should be less.
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