Not much to say, just a regular joe, who saves money doing things myself. I will was this, to all who want to save money, most things today are made to ease the the in the companies fixing most issues like the IPhone and IPad, they are simple to repair, made modularly, so a tech can replace the whole unit in seconds if needed. This means you yourself can do the same with simple tools an the need to fix it fast and cheap. YouTube is your secret weapon and sites like this selling the components to do the repair. The only thing in most cases that prevent you from doing the job yourself, is the parts, as most companies make it difficult to get the replacements, and the knowledge, but YouTube will guide you if you have the passion. I say lets all learn and save money.
Answer to "Headband cracked in the middle"Fixing plastic is tough, I recommend trying that new stuff you can get at Walmart, it's a plastic filler, it's been onTV this stuff only hardens with the UV light that is included in the package. This stuff is unlike crazy glue and has some tensile strength to it, it stays liquid till you apply the light, and it is thinks so it won't run. I think if there is a chance try that and let us all know how it worked.