It's not just the E bay ones, most of them seem to have been manufactured from cast iron, and as any budding metallurgist will know cast iron is brittle and breaks. At a bike meet this year, an A10 ended up on its side due to the failure of a new side stand. I know this is not the answer to your question, but it is a real problem and if anyone can recommend a supplier it might be worth making note of on the forum.