No idea about the price. Doubt can get too much lower than that from msrp.
Just wanted to tell you I've both 18 and 19" wheels; stay with the 18's; they're better from a performance and comfort aspect.
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, KW/GC/M3/Meyle susp, Apex Arc 8, Mich PSS