Our parent company, Unlimited Ink Notary can also push your request out to our network of over 175k mobile Notaries to obtain a quote for you.  Pricing for Jail Notary Services generally start at around $99. We will always try to get you the lowest quote possible with the best trained mobile Notary in your area. Generally, additional witnesses are priced at $50 per Notary. The average cost for jail notary services is between $99 and $150 depending on additional witness needs & the jails actual location with some locations in major populations ranging higher.