[dayooper]

I have owned a large capacity Thumler's Tumbler for many years and never had to replace anything. For tumbling media, I found a 50 lb bag of crushed walnut shells for only $16.50 at an abrasive equipment distributor in Tucson. You could look online or in the yellow pages under "abrasives" and probably find a similar price in your area. This is alot cheaper than buying from one of the internet reloading distributors and paying shipping costs on top of what you see.