I've used Hamilton Edge and Dure Edge and wouldn't hesitate to use either of them again. Indeed, before Ian came along, Dure Edge were the recognized Place To Go. They did stop supplying for a while (I think they were not making enough margin on them to make it worthwhile) but, although I've not bought any blades for quite a while now, they were operational last time I looked.
Bandsaw blades are not expensive and the trouble with selling anything which is fairly low-cost and which is sold one at a time is that you have to sell gazillions of them to make any money. DAMHIKT.
I hope Ian can find a way forward.
Cheers
Steve