Best way to buy UPC codes cheaply for my Amazon business in 2026?

I’m launching a few products and trying to figure out the barcode situation. I want to make sure my listings are safe and won’t get flagged, but the official route is really expensive with all the recurring fees.

Has anyone found a reliable way to get codes recently? I’m looking for something where I actually own them and don’t have to pay every year

Also, with the new 2026 FBA policy changes regarding manufacturer barcodes, does anyone know if buying my own codes will cause issues with commingling? I’m trying to decide if I should just print the FNSKU on the box instead to be safe. Thanks!