a friend once dropped his SGS3 and cracked the screen... turned out you have to buy the a combi of screen, glass and electronics which costs 130€ - if you change it yourself... so 210 incl. labour sounds reasonable...

it's todays devices... mostly screen and glass are glued together so no dust sneeks under... downside is, you can't just change the glass...

also, gorilla glass really is quite durable... you need to take into account the thickness of that glass and the surface area... it is quite durable against scratches and impacts, but it's not unbreakable... the jolla is quite heavy and depending on the angle of impact, it might bend... if it bends too much, the glass will crack...

gravity sucks!