I should mention prices, and note it will all be in Australian dollars.
I picked up the Videosphere about 3 years ago of eBay for about $200.
I will also mention, I am going to try and include everything, even the mundane stuff. So with that said.
Here are some pictures of me washing it. Basically I removed everything that could be removed and scrubbed it with a bit of detergent and brush. The condition is actually quite good, few scratches but nothing major.
This is the colour LCD TV I purchased ofabout a year ago for $150. I spent a while looking for one that could fit the nicest in the existing hole. The actual tube is specified as 9″.
I also picked up a few sheets of various grade wet and dry for $1.30 each.