Yeah guessing it was odd for me to not get a car fired up first time! 
Anyone repaired a starter motor it seems simple enough, but not sure where to get the Bosch repair kits or even if its economically viable than just an exchange?
I've repaired a couple in my time, usually nothing more complex than new bell housing bush, clean up the armature contacts, replace the bushes and replace the solenoid +ve braided strap.
Bear in mind that earth is just for the solenoid, you need a healthy gearbox earth for the starter itself.
When you turn the key, it should at least clunk - that will tell you the solenoid is working. If it doesn't clunk, then the solenoid might be dead. Use a bridge wire direct from the battery to the +ve trigger on the solenoid. If it doesn't make a noise again, whack it with a plastic mallet, if it still doesn't make a noise, then it almost definitely has packed in.
You can strip the solenoid down really easily and make sure it hasn't corroded and seized. If it has, a quick blast with sandpaper and some moly grease should do you fine - then try again and see if it works.
The starter is slightly harder to refurb, but not impossible, just a case of dismantling everything you can see, the bushes should have a minimum of 11mm IIRC.
No harm dismantling it and having a look. I managed to get another 8 months out of my step dads with a quick clean and degrease (which costs nothing). I got a refurb at a local place on my one on the golf after I thought I broke it when the output shaft was wiggling. It turns out the output shaft should be loose, it centres on the bell housing bush in the gearbox.
