Preorders on Teenage engineering OP-Z is 10% off at altomusic.com with code
Regular price: 599.99
Price after discount: $539.10
Also, no tax was charged for NJ order, the shipping is free.
OP-Z is backorder until sometime next year, as demand is high, and TE is pretty slow releasing these into the wild (they pop up in low quantities here and there).
Current ebay prices are 700+
All other retailers excluded these from the BF/CM sales.