Provisional Patent Application - $782 + $110 USPTO Filing Fee = $892. Provisional patents are often referred to as "Temporary Utility Patents". A provisional patent grants you "Patent Pending" status for up to one year from the date of filing. It is imperative that a utility patent be filed before the expiration date of the provisional patent, or references to the provisional (and it's earlier filing date) will be lost.
Provisional patent applications are useful for inventors who cannot afford a utility patent at the present time, but still required a form of patent protection. Provisionals are also useful for inventors who are unsure of the demand for their invention. Rather than having to spend a large sum of money on a utility patent, a provisional may be filed and allow the inventor to gauge market interest in the invention. If an inventor knows there is a market for their product and they have the funding, it is recommended that they skip the provisional filing and move directly to the filing of a utility application.