Your logic is like, after snapshot, PTS price will go down to zero.
No. All I'm saying is that the value of the difference in price of PTS pre-snapshot and post-snapshot is probably less than the Notes it will give you at some point during the presale, at PTS' current price.
prePTS - postPTS > Notes
If the price of PTS were to drop $1, I'm arguing that I'll be able to get 298.647044 Notes for less than $1 at some point during the pre-sale. The day is not over yet, but currently that many notes is about $0.33. At the price I sold at, as long as there is any day that is under 55 BTC donated, I will have maximized my turnout. If you ask me, there is still plenty of room for people to get out now to do the same..