Found these searching for "wide ruled journal" on Amazon:

• https://www.amazon.com/Notebook-Journal-Hardcover-Notebooks-Business/dp/B09869KZF8/
• https://www.amazon.com/Thick-Classic-Notebook-Pen-Loop/dp/B01NAT49WS/
• https://www.amazon.com/Journal-Ruled-Notebook-Hardcover-Bookmark/
• https://www.amazon.com/s?k=nuuna+notebook&sprefix=nuuna (technically it's 3.5mm gridlines, but you can double up; a few of their designs are in your price range)

Some other options I found on Jetpens:

• https://www.jetpens.com/Midori-MD-Notebook-A5-Lined/pd/13606
• https://www.jetpens.com/Rhodia-Webnotebook-A5-5.5-x-8.25-Lined-Orange/pd/4066
• https://www.jetpens.com/Clairefontaine-My-Essential-Notebook-A5-Lined-Green/pd/17593