Here are the stock numbers and list prices of the parts you asked about:

HSP72955 3M94A01103 TG SW 3PS SHRT 9Z US$8.95

Yes, it's the same switch as used in the 9Z transmitter. This is the switch only.

If you want the switch on its PC board, then please order:

HSP79116 TFT1200637 TA86 PCB ASSY 3TF10 US$12.06

These parts can be ordered through any hobby retailer who sells Futaba systems and accessories.