I charge (reasonably) on a per-project basis based on the budget, time, and challenges of the deliverable and parties involved.
THINGS I DO
Perform, engineer, mix, embiggen, write, soundalike, edit, vinyl DJ, etc
THINGS I USE
Two Macs, a DAW, outboard gear, an 8 track reel-to-reel, and many, many mics, instruments, cables, and pedals located in my SoMa, San Francisco, music studio.