I cracked mine a few months ago and also cracked my new one which ill be claiming on the insurance soon as ive made it worse today. The quotes i got around 3 months ago was £250 and the LCD was intact. It sounds like they was just going to replace the glass and LCD but they cant guarantee water-proofing either.
I went to 2 shops locally to get quotes and it was same. In fact, little higher at £300. Think the S7 Edge screen is pricey even without factoring in LCD part which isn't being replaced/fixed for me. Managed to claim £200 on insurance. Hopefully that won't impact my 4 years no claims by much. So basically paying £100 for it to be done.