FYI, Amazon has 3m 483 tape on sale again for $8.63/roll, limit 10. Even better, it's eligible for Prime shipping. I had switched to a cheapo tape due to the high prices on 483, but now I am back to the good stuff.
http://www.amazon.com/gp/product/B00...uct_refresh_T1
This stuff must be really good! If you look under "Product Features," fourth bullet point down it says: "Nuclear power plant construction and maintenance."
Wow!