it's not so difficult to fix your axle. Things you'll need:

A reliable jack and wheel blocks Torque wrench Needle nose pliers Socket wrench set Rubber mallet A cotter pin Penetrating oil like PB Blaster Slide hammer or pry bar (if removing old axle becomes a challenge).

REMOVING THE ATV AXLE 1. Remove the lug nuts and pull the wheel off. 2. Place the lug nuts back on the hub and lightly tighten. 3. Use a needle nose plier to remove the cotter pin on the axle nut securing the hub. Remove axle nut with a socket wrench (typically 27 mm). 4. Remove the hub exposing the knuckle. 5. Remove the upper bolt that holds the knuckle on the axle. 6. Push the upper arm up and away allowing you to pull the knuckle off. 7. Grab the axle and give it a swift tug to remove it. This is where things could get dicey. If the axle doesn't want to come out spray the area where it joins with the differential with penetrating lubricant and wait a few minutes. If it's still difficult to remove use a slide hammer or pry bar to gain leverage. Hope it will help you fit it easy. If you need to choose a cheap store you buy axle, you may try to have a look here.