I grew up in Northern Illinois going to the Rockford Woodman's. I remember that location having great produce and dairy.
The Gammon Woodman's is a disappointment. I've purchased dairy products that were outdated. The produce is hit or miss, even during the summer.
The actual price difference between Woodman's and other local stores isn't all that much, given how they tout not having to pay credit processing fees by not accepting credit cards. There's probably maybe a 10% price difference between Target and Copps compared to Woodman's. Trader Joe's has better prices (and produce) than them and they accept credit cards.
It's not a full service store - no deli and limited bakery hours. It's also in an area that can be risky to be in at certain times, so be very careful.