Purchased a Kent BK4 silvertip shaving brush for $87.76 at feelunique.com. They also have the BK8 for $126.44. They're overseas but shipping only takes about a week and it's free!
They claim to be "Europe's largest online beauty retailer" so that may be the reason why they're able to offer the Kent's as such a cheap price. I just thought I'd share that just in case any of you were interested in buying their brushes. Enjoy!