Does anyone think this is worth buying? Or is it bad batch?
If you going to buy from eBay there are two very important things you need. One, a copy of the receipt from the original buyer and two the name of the seller to make sure they are an authorized Shure distributor. The two times I have called Shure for service they required me to send them a copy of my receipt.
As for the phase problems and dead IEMs I believe they were all first batch like mine manufactured before October.