Tomorrow (22 July) is the cut off date for early entries for the 2016 ANU Open and Minor (Under 1600 event). The tournament is next weekend (30 and 31 July) and has over $3000 in prizes. Full details are available at http://vesus.org/festivals/2016-anu-chess-festival/ (click on the 'Regulation' link).
NB You only need to register early to be eligible for the discount. You can still pay on the day, but as long as you enter by midnight tomorrow you get the $10 off your entry.