Well, you can also look at the next difficulty. If it's just a few percent, as it was in previous difficulty changes, then you might be better off buying a few days before the difficulty change instead of waiting for the next level. The coming change, within the hour, will be between 7% and 8% added difficulty.
Good point. Missed profit while waiting for a difficulty change could very well be significant if the price is only a miniscule adjustment, but usually it works out best to buy right after the price drop. The referral program can also be a huge advantage too. When you combine these two strategies, success seems very likely especially with these recent difficulty changes. Unfortunately drop in costs are not keeping up with the difficulty changes, but we remain very competitive with our price. I'm looking forward to crowning a winner in 1 week with our hash power giveaway -- someone will be getting something for literally nothing.
