Thanks tomscy2000! So ~$54 USD for the R04 flagship version and the GR99 included as a gift?... seems like this is the place to buy it... tmall
The R04 updated version says "R04 VSONIC" on the face of the IEM, the flagship version says "R04PRO VSONIC", and has different impedance, THD, frequency extension, and cable specs.
Some news about the GR07...
"GR07旗舰版小改款 预计上市时间在6月初。本次主要针对线材进行再一次强力升级。售价维持原价 999元。"