Welcome aboard, rand0MPrecisi0n.

Just to be clear, were you talking about analog triggersticks . . .

. . . or analog thumbsticks and trigger buttons?

Divemaster127 has better prices on analog triggersticks
here than buying direct from Happ, but they're definitely not inexpensive.
Thumbsticks are cheap and sold by many vendors.
Trigger buttons may be difficult to find if you want a shape other than round.
For an analog encoder PCB with software-adjustable sensitivity, look at Ultimarc's
U-HID series or an
A-Pac.
Scott