Is $2,844 too much to pay for a fuse?

Can anyone provide technical guidance on how I can modify my amplifier?

I wish to add a $2 Littlefuse to the amp’s circuit that will blow first in order to prevent my $2,800 fuse from blowing in the event of an amp malfunction.

What am I missing? These appear to cost $28.50 per fuse. That's cheap by premium fuse standards. 

ridiculous, it never ceases to amaze how stupid certain 'audiofools' really are !

using your link, they are only listed as 28.50.
am I missing something?

They are on sale today! Big discount!  Below cost?   $28.50 is still an expensive fuse. Do the research.