New to Archive-X is mini sets, this is a way of purchasing sets for multiple subjects without purchasing every full set 

Set X

Used specifically for X-Wing and many more 

Contains

AX-025 1975 Caboose Red

AX-034 ILM Olive Oxide 

AX-007 1975 Sp lettering Grey 

AX-006 Light Reefer Grey 

AX-036 1975 Big Sky Blue 

For Example, if you wish to purchase paints to do most X and Y wings, you can save money by purchasing sets  1, 2, X, Y