C&P from Coolsat's Official Release Site:

It has been officially stated that if anyone buys a CoolSat 4000, 5000, 6000, 8000 now they are buying clones only as All originals are out of stock.
Now the current line is CoolSats 6100, 7000,8100

All dealers that carry 100% legitimate products have said all stock piles of the above mentioned boxes have been depleted.

So all buyers beware if anyone, site, ebay or other resources that try to sell you any CoolSat 4000, 5000, 6000, 8000 they are trying to sell you a 100% cloned product that later on will end up not working.
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Currently Testing:Coolsat 6000(2),Pansat 2500 converted to 2700(1),and CW600 Premium(1)