Friends of the Free Public Library of Monroe Township Book Sale Book Sale — Williamstown, NJ

713 Marsha Ave, Williamstown, NJ 08094

Oct 3, 2026

Fall book sale with community flea market. 10:00am-2:00pm. Early bird pass $5 at the door; puzzles $1.

While we strive for accuracy in our listings, we can't guarantee that all the information is completely accurate or up to date.

Bag Day Profit Calculator

Estimate your cost per book and resale margin before you go.

Bag / Entry Cost ($)

Estimated Books per Bag

Average Estimated Resale Value ($)

Effective Cost Per Book

$0.33/book

Total Estimated Profit Margin

$115.00

Savings vs. ~$17 new retail98%

Estimates only — resale values vary by title, condition, and marketplace fees.