I would like to ask a few questions about spray paints:
1.How much is Tamiya PS-46? And where can I buy it?
2.Why is Tamiya TS-86 so expensive? What is the cheapest price of Tamiya Ts-86?
3.What is the difference between Tamiya TS-21 and Tamiya TS-86?
4.If I want to use Mr. Color (Mr. Hobby) to spray my bus gold, which colour should I use?

Thanks.