Or, what do I get for my money?
Some editing services let you choose the level of corrections made, from just proofreading for spelling errors, through to rewriting where there are flaws in style and/or content. They then may offer a sliding scale of charges, depending on how much work your document needs.
Because you can, and probably have, run a spell-checker yourself, AdvanceEdit offers what is called a ‘copy edit’, and a little bit more – a complete service, at a standard price, with no surcharges for complicated manuscripts. After all, why only correct to a certain level and leave some errors remaining? Read on, to see what’s involved.