About RetroPrice
Built for the collector in the back room — not the algorithm.
What Is This?
RetroPrice tracks what physical media actually sells for. Not asking prices, not rough estimates — real sold listings pulled from eBay, Heritage Auctions, and collector communities. You bring the tape; we bring the number.
The price guide covers VHS, DVD, Blu-ray, 4K UHD, and LaserDisc, with separate tracking for graded copies (VGA, CGC, WATA). Wave Analysis layers Reddit sentiment and eBay scarcity into a momentum score, so you can see which titles are heating up before they're gone.
Data Sources
eBay Browse API — Sold listings and completed auctions, OAuth 2.0 authenticated. The core of every price estimate.
Heritage Auctions — Movie memorabilia and high-end collectible auction results, for when something actually matters.
Reddit communities — Price discussions and collector activity across 9 subreddits:
- r/VHS — the VHS collecting community
- r/dvdcollection — DVD collectors
- r/criterion — Criterion Collection enthusiasts
- r/boutiquebluray — Arrow, Shout Factory, and boutique labels
- r/Steelbooks — steelbook collectors
- r/movies — general movie discussions
- r/TrueFilm — serious film discussion
- r/4kbluray — 4K UHD collectors
- r/LaserDisc — LaserDisc enthusiasts
Wave Analysis
Wave Analysis combines Reddit mention velocity, upvote weight, and cross-subreddit discussion with eBay listing scarcity and seasonal multipliers into a single 0–100 score. The goal is to flag titles before the price spike hits, not after.
Scores above 75 are Peak. Between 60–74 is Heating Up. Below 25 is Bottom. The confidence score reflects data quality: how many listings were found, how much Reddit activity, and how stable the price trend is.
Reddit Integration
The Reddit analyzer extracts movie titles (three confidence tiers), price mentions, condition language (sealed, mint, near mint), grading references, and format discussions from community posts. All data is aggregated — individual usernames and private discussions are never stored.
Reddit OAuth redirect URI for this installation:
Technology Stack
Privacy
RetroPrice collects publicly available pricing and discussion data for market analysis. No personal information is collected from Reddit users. Scraping follows each platform's terms of service and robots.txt directives. Rate limiting (2–6 second delays) keeps API usage respectful.