If they are all Mtn skis and you don’t slide rails very much, Getting section of edge replaced by shop might be worth it(full edge replacement doesn’t really exist)
If u slide rails a good bit then here is your best bet….
You need:
one or two woodworking clamps,
two pieces of wood about 1/2” thick, and slightly longer than cracked area.
JB Weld or other solid brand of epoxy
knife or something to pry up edge
pry up affected area of edge and insert epoxy generously
Protect both side of ski with wood pieces and clamp until epoxy is fully cured (I recommended putting packing tape on the face of wood so it doesn’t get glued to the ski)
use file to sand excess epoxy
you’ll be good for at least a week haha. Keep an eye on your edges and fill opening gaps/cracks with JB Weld as they start. Will make dying skis last way longer.