This is how it's going to go down.
Today we are going down to around $520. Tomorrow, Friday the day of the auction, price will hit $480, and thusly the SR coins will be sold at around that price. BTC price will head south over the weekend, due to the low price during the auction, and test support at around $460.
Coming Monday, we will slowly start to recover.
Yes, I am from the future past.
Somebody buyin 30000 coins can spend 2-3 thousand coins to move the price down before the auction to eliminate competition. But I doubt it could push the price to 460, sorry futureman. I think 550 is it.