I've been buying CAPT at around 4000 satoshi for a few days now, but the price keeps on dropping! I think it'll continue to drop until a few days before the reward halving. I'll probably wait till then to get it even cheaper.
It's a good strategy to invest in captcoin now that the price is still low and dropping. I believe the price will start to skyrocket when the free promo is over. Juts keep on buying coins:) And never sell them until it reach $1 per coin!