You can keep clogging the for-sale section with 2 bumps per day hoping that a new buyer surfaces.... or you can cut a deal with interested parties. I typically take the latter approach, but that's just me...
Best of luck with the sale. These are awesome wheels and I'm not saying your asking price isn't fair
'08 E90 M3 - Alpine White - Sold
'13 E92 M3 - Silverstone II - Sold
'04 E46 M3 - Jet Black - BBS E88, KW Clubsports, Brembo BBK, SuperSprint Exhaust, Recaro
'15 i3 - Laurel Gray - Why would I mod this thing?