Where to find cheap MOSFETs?

As for most components, LCSC has the best prices if you want to order more than just a few MOSFETs (due to the high shipping fees)

Small-signal MOSFETs

• N-Channel 2N7002K 60V 300mA 2.2Ohm @0.008€@3kpc = 24€/reel

Power FETs (small package)

These are mostly SOT23-3, so the don’t provide good power dissipation. These are mostly used for switching voltages on and off and not for linear applications.

• P-channel SOT23-3 2.3A 20V: Si2301-ZE