Your job post for a Cozy Mystery Ghostwriter looks well-structured. Here's a refined version with slight adjustments for clarity and professionalism:
We specialize in crafting compelling stories and persuasive content that resonate with readers. We are currently seeking a talented, experienced, and versatile Ghostwriter to create exciting, trope-driven Cozy Mystery novels.
Project Overview:

    Writing two books, each with a word count of 50,000 words.
    The estimated project budget is $1,000, at $0.01 per word.

Requirements:

    Plot Development: Capable of completing plot summaries and chapter-by-chapter plot outlines based on provided themes and tropes.
    Word Count: Ability to write at least 15,000 words per week.
    Native English Speaker: Excellent command of the English language.
    Professional Work Ethic: Reliable and consistent with deadlines.
    Original Content: No plagiarism—ideas must be entirely original and not shared with previous clients.
    Communication: Must be easily accessible and responsive to feedback.
    Commitment to Quality: Willing to revise until the story is 110% perfect. Revisions will be compensated.
    Interview and NDA: A phone interview and the signing of a contract/NDA are required before starting.

Application Instructions:

Please submit the first three chapters of your best Cozy Mystery novel for review. Begin your proposal with the phrase “COZY MYSTERY” to confirm that you’ve read this posting in full.

Thank you for your interest in working with us! We look forward to reviewing your application.

This revised post maintains the original intent while enhancing clarity and professionalism. Let me know if you'd like further tweaks!