Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Seriously though, AFAIK, there really isn't any period when it's best to buy a PC considering that there are tons of awesome deals throughout the whole year. Maybe Christmas time if you're near a Fry's or MC but thats about it. BF hasn't really been a time of great hardware sales for the past 4 years.