What you charge is up to you, but here are the components you should use in a pricing formula.
(1) Time spent
(2) How valuable the time is when the job is assigned, i.e. end of the month, time is more valuable as there are more jobs.
(3) e-docs, extra fee
(4) Unknown company? Charge a bit more to compensate you for your risk.
(5) Miles - charge based on how far the job is and how long it will take. Windy mountain roads take longer than open freeways, and Los Angeles traffic takes longer than Oklahoma traffic.
(6) Pickup and delivery of documents. Charge for your time.
(7) Does the company cancel a lot? Charge extra.
(8) Are you desperate for work? Charge less.
(9) Three or more signers on loan? Charge more.
(10) Eight or more notarized signatures or a really long loan package? Charge more.
(11) Company owes you more than a few hundred dollars? Turn the job down until you get paid.
(12) Company has a bad reputation for not paying notaries? Decline the job.