$510.00 for an Aluminum cover for the ARC Ref. 10?

And $100.00 for one fuse is a bargain?

What does a re-tip on a $15,000 cartridge cost?

Ridiculous! At some point goodwill has to come into play. That is nothing but money grubbing!

Good luck sounds like big ripoff!!

Curious as to what the point of originally installing a polly cover is versus aluminum ; that is aside from manufacturing cost?

10-30-15: Lostbears
" ...It is a design flaw and ARC knows it."

Hmmmm, no it's not a design flaw. If the unit is placed on top of a rack and air allowed to circulate freely around it, then the top will not warp.

However, if ventilation is restricted, then warping is a possibility. For those users, a metal top is offered.

You could think of the acrylic top as "the canary in the goldmine." I think it's important for gear to be properly ventilated ... especially tube equipment. And I haven't had any problems with the acrylic tops.