Wordy.com and ProofreadingServices.com both have many proofreaders ready to copy-edit and proofread at a moment's notice. Grammarly is a different option; it is a free program that checks spelling and grammar errors.
Wordy has copy editors working in most time zones, so the turnaround time is fast, and the service promises to provide an average of 1200 words per hour. ProofreadingServices.com is not quite as fast, but it boasts that it can deliver a finished product in as few as three hours.
Wordy requires customers to pay a one-time fee for access to editing services. Different packages offer different services. For example, the cheapest package, Bronze, costs $49, as of 2015, and allows customers to have 1650 words edited. The Platinum package costs $2,999, and gives customers 117,600 words. Once a the plan is used up, the customer can buy a new package.
ProofreadingServices.com offers free instant quotes.