You should research a bit.
I've gotten a few blades replaced, and it wasn't just from snapping off but various reasons. (heat aided etching, accident with a grinder, dropped blade, snapped off tip from testing, preparing for sale and a few others).
Here's a few I've used Benchmade/Bradley Cutlery (multiple times, they're the same), CRK (multiple), Buck (twice), EESE (twice used, break it replace it policy for their fixed blades). Most expensive one was CRK@ $135 iirc. Usually though they range from $20-$40~
Also few more I havent mentioned because I don't feel right, they don't advertise it and made "exceptions".