A cheap vertical ergo mouse if you want to try the style. It worked well while it lasted (used daily for a year). It is likely an unbranded Anker currently selling ~$35 on Amazon. The Logitech MX vertical mouse feels more solid but that is a $100 mouse.
Be mindful that Estimated Handling Time is 14 - 21 Working Days and ShoppingSquare after sale service is somewhat woeful…
is rechargable according to post
This one says rechargeable and the one from kmart is not though. So not exactly apples to apples. No mention on the one from ebay, most likely not as well.
I bought the Kmart one , before I spent over $100 on the Logitech one, just to see if I liked using it , and I didn't .
Yes it's not an apples to apples comparison , but worth trying the Kmart one before you splash out big money on the big name one , or you don't want to wait 14-21 days for the one in the OP.
The one from ebay is also rechargeable. Check the description page.
Been using it for a couple of months now and the scroll plays up a bit
I actually developed wrist pain and I got one from banggood to try called wowpen joy. Its been working good since 6-7 years. I Have both wired and wireless. The only problem with wireless is it will not work till the computer windows fully boots up.
This site is useful if you want to find out more or search for a suitable vertical mouse size: https://www.nomorepainergonomics.com.au/
Buy in on eBay for better after sale service