I bought a perfectly playable 30 button anglo concertina on ebay for less than I was prepared to pay for it.

It was a cheap Hohner, probably Chinese manufactured, but it did its job of getting me started though it began to develop faults fairly quickly so I upgraded to a decent quality instrument. The faults were inherent in the original manufacturing quality and in no way were a reflection on the seller whose original description was accurate and who was straight in his dealings with me.