Manual Research: Verified Shopify Stores Selling Digital PDF Documents

I am seeking manual web research to identify 50 Shopify stores that primarily sell high-quality digital PDF documents, such as guides, manuals, reports, workbooks, worksheets, or policy packs. Each store must meet strict qualification criteria:

- Must use Shopify as the backend (verified via page source or checkout).
- Must sell digital PDFs as their primary product (not add-ons).
- Must have visible license terms or usage restrictions (e.g., no copying, no sharing, personal use only).

Deliverable:
A spreadsheet with 50 verified stores including:
- Store name
- Website URL
- Shopify verification method (page source or checkout)
- Example PDF product title and product page URL
- Approximate price range
- Location of license/disclaimer language and summary of restriction wording
- Founder/business owner name (if available)
- Contact details (LinkedIn or email if available)

Requirements:
- Manual research only (no scraping tools or recycled lists).
- Accuracy is prioritized over speed.

Budget: $200-$300 USD

Timeline: 7–10 days

How to Apply: Applicants must explain:
1. How they will verify Shopify stores.
2. How they will confirm the product is a PDF document.
3. How they will identify license/usage restrictions.
4. Estimated delivery time.