Your city is quite large. Check around for anyplace that owns the installer tool. Then get them to change the boot if their labour quote makes sense. I can and do improvise a lot of things. This though would give me second thoughts. If you had an actual axel rebuilder in town somewhere would be ideal. They would have to have a tool.

Other than that just geting a used axel with good looking boots from a auto wrecker may be a good option. Just flush out the joints and relube them before installing is good preventative practice. In Canada the cooler overall temperatures possibly prolong the lifetime serviceability of those boots. That makes the auto salvage yard option even better than south of us.

I am in favour of this approach over the cheapy new chinese axles even if the cost where the same. Quality original new axle assemblies are pricy. True rebuilts only so/so now if available at all.