This is a product with 14000 orders on AliExpress. Do you think is it too late to start selling it or its still possible because of its high demand? What do you think about it?

I would test it if it’s validated by other sellers, sold on Facebook. I would use adspy to check the keywords for the product. If the product sells successfully on FB, I would go after it. Aliexpress by itself is not enough of a validation factor in my experience. Needs to be confirmed and double-checked with adspy