ISE Sabre Dance vs MK Dance blades?

[Query]

Anyone know about Jerry's ISE Sabre Dance blades. They claim to copy MK Dance, at a much lower price.

https://figure8.ca/shop/index.php?route=product/product&product_id=2123

https://www.amazon.com/Figure-Skating-Blades-ISE-Sterling/dp/B07BNX8JCJ

I'm wondering about material composition, and whether they truly copy the rocker profile, toepick shape, and the slimline width at the bottom.

From these pictures
https://discountskatewear.com/mk-dance/?sku=SKU-1717-Blade%20to%20fit%20boot&utm_term=&utm_campaign=SO_Desktop&utm_source=google&utm_medium=cpc&gad_source=1

https://skatesus.com/product/mk-dance-figure-skating-blade/

I think the toe pick is a bit different.