id say you have a potential to make more money by selling indivually but youd probably spend a lot of time finding buyers so selling them all together would be best in my opinion
as for times of the year to sell - i havent noticed any sort of highs or lows personally. At christmas people will be spending more with the holidays etc but theres sales/commissions etc will be higher around this time also so i dont think theres much difference
There probably are highs and lows for the big players of the internet but forlow to medium sites i dont think there is - feel free to correct me though
