# Extension Innovation Method by Chunyan Yang — resale value

**Extension Innovation Method by Chunyan Yang** — resale value from real closed eBay sales.

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%3DChunyan%2520Yang%2520Extension%2520Innovation%2520Method%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%3DChunyan%2520Yang%2520Extension%2520Innovation%2520Method%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

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## Details

| Field | Value |
| --- | --- |
| UPC / EAN | 9780429769962 |
| Brand | Chunyan Yang |
| Published | 2018 |
| Publisher | Taylor & Francis Group |
| Pages | 258 |
| Editions | 6 |
| Category | Mathematics |

## Extension Innovation Method resale value

**Extension Innovation Method** by Chunyan Yang (2018). Across 6 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 the 6th edition of this math text still relevant?**

Published in 2018, this 6th edition remains a valuable resource for studying Extension Innovation Methods.

**What is the ISBN for this book?**

The ISBN for Extension Innovation Method by Chunyan Yang is 9780429769962.

**Who published this mathematics text?**

Taylor & Francis Group published this book in 2018.

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Full price guide: https://junkpal.ai/products/extension-innovation-method-chunyan-yang-ol22147121w
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)"