I have no association with HID Hut, but just found that they have XenTari (1 lb) on sale for 24.99. With shipping it came to $33.49 for me. Your price might vary depending on shipping. This price isn't bad considering the guy selling it on Beesource wants $41.50 for 1lb.http://www.hidhut.com/catalog/xentari-bt-p-31.html
For those that don't know about Bt aizawai for wax moth control, do a search on Certan and/or B401.