The ppc and nu community development team is great, but Teehe and B&C auction have failed,Can let the market set the price? for example(they are very successful):
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http://www1.agsexplorer.com/(for bts play etc)
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https://bitcointalk.org/index.php?topic=1005972.0 (for DACRS/Smart Contract )
like this 
First ~ 20,000 BKS (exactly 25%) are available for $ 5.00 US each.
Second ~ 20,000 BKS (exactly 25%) are available for $ 6.00 US each.
Third ~ 20,000 BKS (exactly 25%) are available for $ 7.00 US each.
Final ~ 20,000 BKS (exactly 25%) are available for $ 8.00 US each
or this
First ~ 20,000 BKS (exactly 20%,give 10%) are available for $ 5.00 US each.
Second ~ 20,000 BKS (exactly 20%,give 5%) are available for $ 5.10 US each.
Third ~ 20,000 BKS (exactly 20%,give 5%) are available for $ 5.20 US each.
Final ~ 20,000 BKS (exactly 20%) are available for $ 5.30 US each