I've ordered from them before - quick shipping & good pricing.
Last order was for brake sensors/hardware - the sensors they sell are made by PEX, and all the hardware (bushing kits, slider bolts) are made by ATE.
I know ATE is a German mfg. that makes many OEM parts for German cars - they are simply rebranded to sell as OEM - and of course OEM's jack up the price
Brake parts were all PnP, fit perfectly, & function as OEM for 1/2 the cost
ATE may actually be the mfg. for BMW OEM - simply rebranded. Just like Mann makes the BMW Oil Filters, Castrol makes the BMW oil, Chevron Techron makes the BMW fuel conditioner - all of which can be bought for a reasonable price - all because they are not in a BMW box with BMW label...