AES will edit your abstract or provide a sample for free.
Rates for basic services are:
Proofing: $10 per 1,000 words
Copyediting: $15 per 1,000 words
Content review: $25 per 1,000 words
All prices, including for larger projects and other services, are subject to negotiation. AES is here to help you, and we will do whatever we can to meet tight budgets.