List and Comp 15

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Your All-In-One eBay Listing Assistant

Access by invitation only. The software is free to use, but requires a paid ChatGPT Plus subscription. List and Comp 15 helps sellers build better listings using AI and public eBay API data. All listing insights are based on real-time eBay marketplace trends. This tool is independent and not affiliated with or endorsed by eBay.

Watch It in Action

Here’s how List and Comp 15 works on mobile. Upload a photo. Get optimized eBay listings instantly.

19 AI-Driven Modules – Auto-Run from Image or Title

1. Title Optimizer: Creates compelling, SEO-rich eBay titles under 80 characters using keyword stacking and best practices.
2. HTML Description: Generates a clean, SEO-enhanced HTML description with a collector note and light formatting.
3. Plain Text Description: Provides a Markdown-style, scan-friendly version of the listing description.
4. Etsy Tag Generator: Returns exactly 13 comma-separated, buyer-style SEO tags for Etsy and cross-listing.
5. Item Specifics Extractor: Extracts detailed specs like brand, model, material, theme, and recommended age.
6. Category Path: Displays the full eBay category path like Toys > Diecast > Trucks.
7. Price Range Estimator: Shows low, high, and average sold/active prices with and without shipping.
8. Competition Meter: Rates market saturation, activity level, and sell-through strength using live eBay data.
9. Undercut Smart Suggest: Suggests an undercut pricing strategy and flags shipping impact on profit.
10. UPC / MPN Validator: Verifies or flags missing UPC/MPN and cross-checks against brand.
11. Image-Based Condition Detection: Uses photo to infer condition like sealed, shelf wear, or vintage display.
12. Title Compliance Checker: Flags issues with all caps, banned words, and eBay policy violations in titles.
13. Crosslist Formatter: Auto-formats listings for Mercari, Poshmark, and Facebook Marketplace styles.
14. Bundle Suggestion Engine: Suggests complementary items by theme, brand, or collection value.
15. Fee & Profit Calculator: Estimates profit after eBay fees (category-specific), shipping, and optional cross-platform rates.
16. Cross-Market Keywords: Generates 8–12 SEO-rich keywords tailored for Mercari, Depop, Vinted, and Poshmark.
17. Cross-Market Titles: Creates platform-optimized titles for cross-listing based on tone and buyer behavior.
18. Market Intelligence Panel: Analyzes top 30 listings for title trends, pricing, condition mix, and competition insights.
19. Relist Optimizer: Revives stale listings with updated titles, descriptions, and pricing based on market shifts.