Yes, we have professional editors who can work with you on your manuscript. This involves editing spelling, grammar, tone and tense for consistency with a style guide.
The style guide is The Chicago Manual of Style. Spellings are American English by default, but you can choose British or Australian English.
It is a paid service US $0.014c (or AUD $0.02c per word), starting from a minimum price of US $199 (AUD $269).
The turnaround is two weeks. After that time you'll receive a fully edited manuscript, and a letter from your editor discussing the changes.