I’ve never been there. I looked at the website & Google images, and along with what @LuckyGuy said, it looks just like a spinoff of the late Building #19, a New England chain. Especially with all of the cartoons. But I bet Ollie wouldn’t’ve beat Jerry when it came to prices.
If it’s anything like Bldg #19, it’s rock-bottom quality compared to other stores but very cheap. Bldg #19 used to sell things like expired canned goods, water-stained shirts, ripped mattresses, and shoes for Sasquatch. But there’d always be a gem in there somewhere. I miss it. Rest in peace, Building #19.
The inside sort-of looks like a Big Lots. In that case, I’d say it’s one step up, quality-wise.