I was involved in GB5 and GB6. The Antminers in GB5 shipped early, and arrived quickly, so I was very happy with that GB.
The Antminer I purchased in this GB shipped two days late (Jan 8th instead of an advertised ship date of Jan 6th), so I basically lost two days of mining revenue and am not nearly as pleased.
Did anyone else order in this GB ship late as well, or am I just unlucky?
No, you are right, same for me. Last grp5 was offered shipping Jan 4 and i got on Jan 3 and all group before too, always fast within the timeframe. This grp6 got 3 day after the posted shipping date, 3 days lost for nothing. Not nice.
The difference from grp 5 to 6 was 0.15BTC for each miner, but the lost days are from jan 4 to jan 9 at least 4, in my case 5. In 5 day with the actually diff. can mine with each oc ant 0.07091BTC, so after more then 2 days its lost of alot money, depend on the price.
If the next grp will not decrease a huge step, i am definitly out. Even when compare the 1. auction where the miner sold for 4.25BTC in dec last year with diff 707m and the price now, with double diff at 1.400m the price is much to high. At least the price should decrease depend on the difficulty increase, so now should be a price about 2.25BTC reasonable.
With the next expected diff of +23% the next grp ants must cost about 1.8btc, to be a fair price offer.
Last but not least even the quality is lesser now. The first miner from last year can overclock easy with 400mhz to 200-210Gh/s, now from 5 miner i got within the last 2 Groupbuy i can only 2 miner overclock at 400mhz, the other 3 bring 9-10% Hardware Error, so OC is no option.
- tomoorow again :-) 
