You can buy them on Amazon with free shipping:
https://www.amazon.com/STEPPERONLINE-Closed-Stepper-1274-76oz-24-80VDC/dp/B08Q7JMVM5/ref=sr\_1\_6?crid=3Q33OMGBENQ7I&keywords=nema+34&sprefix=nema34%2Caps%2C155&sr=8-6