$IO Volume suggests that many people are looking to get in at the range from $3-4 (-50% from ath). However, if you are looking to long term invest in this project, then it might be a good idea to start accumulating from now. Perhaps a good plan would be:
# 10% at market price
# 15% at the recent low (3.50)
# 20% at $3.00.
# 25% at 2.50.
# 30% at 2.00.