There was one for sale on ebay last week, I think the price may have gone up a few $ but not sure.
Being a "repeat customer" maybe he'd be willing to sell you just the glass if your base is still good.
My plasma globe met a similar fate a couple years ago. Ooops.
And if I wouldn't have knocked over the stand one of my Snell JIII's was on and decided to have the damaged woofer refoamed by a pro, I wouldn't have also taken my RSM woofers to be refoamed at the same time ( bought them new in 1983, they had been in the original boxes in a spare closet for 17 years after a DIY refoam ended up with one having voice coil rub and I bought the Snells). Got all 4 woofers back and said hey, lets give those RSM's a listen again. That started my whole Infinity passion up and got me to where I am now. Wherever that is.