# Promises to keep by Charles Paul Conn — resale value

Source: JunkPal price guide — https://junkpal.ai/products/promises-to-keep-charles-paul-conn-ol3375496w

**Promises to keep by Charles Paul Conn** — resale value from real closed eBay sales.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/promises-to-keep-charles-paul-conn-ol3375496w

Values are medians of real closed eBay sales, updated 2026-06-19. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DCharles%2520Paul%2520Conn%2520Promises%2520to%2520Keep%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DCharles%2520Paul%2520Conn%2520Promises%2520to%2520Keep%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| UPC / EAN | 9780725519926 |
| Brand | Charles Paul Conn |
| Published | 1985 |
| Publisher | Berkley |
| Pages | 151 |
| Editions | 8 |
| Category | Business |

## Promises to keep resale value

**Promises to keep** by Charles Paul Conn (1985). Across 8 editions. Used-book value depends heavily on edition (first printing vs. reprint), condition, dust jacket, and whether it's signed. First editions and out-of-print titles command the biggest premiums.

### What drives the price

First editions/first printings, intact dust jackets, signatures, and unmarked pages are the top value drivers. Book-club editions and later reprints are worth far less.

## FAQ

**Is this book rare or common?**

This is the 8th edition, making it a widely available printing of the 1985 publication.

**What is the original publisher of this book?**

The book was originally published by Berkley.

**What is the ISBN for this specific edition?**

The ISBN for this copy is 9780725519926.

---

Full price guide: https://junkpal.ai/products/promises-to-keep-charles-paul-conn-ol3375496w
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-06-19, based on real sold listings (junkpal.ai)"