Problem & demand:

• On Reddit, recurring questions: users asking for multi-store ebook price trackers (e.g. r/ereader thread 1j1b0oq, r/ebooks ‘price_comparison_tool’, r/kobo ‘any_appwebsite_to_check_free_books_or_sales’). Comments mention existing tools are Kindle-only or outdated (Luzme hasn’t been updated for years, eReaderIQ limited to Amazon).
• Keyword data:
  • “kindle daily deals” – 22 200 searches/mo, difficulty 0 (transactional – people hunting discounts).
  • “kindle deals” – 8 100/mo, difficulty 12.
  • “amazon price tracker” – 40 500/mo, difficulty 20 (generic but shows large pool of price-tracking intent).
  • “ereaderiq” (brand for Kindle price alerts) – 2 400/mo, difficulty 5 ( brand search indicates people actively using/looking for ebook price-alert service ).
  • “kindle price tracker” – 260/mo, difficulty 18.
  • “ebook price tracker” – 110/mo, difficulty 2. (Niche keyphrase low but long-tail searches exist.) Combined, >50 000 monthly searches around ebook/Kindle deals or price tracking with low SEO difficulty (<30) satisfy the 500-volume rule.

Competitors:

• eReaderIQ.com – Kindle-only; imports Amazon wishlists, email alerts. Monetised via affiliate...