Try eBay; failing that, you can try Googling Science Fiction merchandise dealers to see if they can help.
the supreme dalek
The basic answer is yes. Most of this was disclosed in the Doctor 7 show Remembrance of the Daleks which aired in 1988. It is unclear how the Emperor Dalek Davros is related to the Emperor Dalek in the Doctor 2 Adventure Evil of the Daleks
Mark I Dalek (The Daleks) Mark II Dalek (The Dalek Invasion Of Earth) Mark III Dalek (1965-1984) Dalek Emperor (Evil Of The Daleks and Parting Of The Ways) Dalek Supreme (Planet Of The Daleks) Necros Dalek (Revalation Of The Daleks) Imperial Dalek, Special Weapons Dalek, Renegade Dalek (Remembrance Of The Daleks) New Series Dalek (2005-TBA. Daleks will return in 2010's "Victory Of The Daleks").
Toy shops.
they wouldn't sell, even though id buy oneThat's not really a proper answer. Figures have been released for 'Davros' and the 'Dalek Supreme' from "Journey's End". In fact there's even a figure for the Emperor's Guard from "The Evil of the Daleks". A 'Dalek Emperor' would definitely sell better than the 'Dalek Supreme'.
1st . dalek caan 2nd. dalek sec 3rd . dalek they 4th . dalek jast
The Dalek that went insane after pulling Davros from the time-war is Dalek Caan, apart of the Cult Of Skaro (Dalek Sec, Dalek Caan, Dalek Jast, Dalek They)
The name of the black Dalek in Doctor Who is Dalek Sec.
It has not been released as an Action Figure, yet. a few years back on ebay there was one
either dalek sec or dalek stratigest
The "yellow dalek" is called the Eternal Dalek.
The Supreme Dalek is the ruler of the renagade daleks. The renegade daleks are the daleks that don't obey Davros and the ones who arrested him for crimes against the Daleks in "Revelation of the Daleks". The Emperor is the ruler of the imperial daleks, the ones that were recreated by Davros in "Revelation of the Daleks". In the earlier years of the Daleks, The Daleks are ruled by the Supreme Council, of which the Supreme Dalek Was the head of. This now brings us into the different colours of Daleks. The Red Dalek is the supreme. The Black is the leaders of the warriors and the grey (In the new series, Gold) are the ordinary Daleks. The Daleks in "Bad Wolf/Parting of the Ways" Are Imperial Daleks, because they were lead by the emperor. The Daleks that fought the Time War would've been Imperial Daleks too, because Davros was there as well. It is possible however, that both Dalek factions were fighting, their differences put aside to exterminate the Time Lords. This is never made clear. The Daleks in "The Stolen Earth/Journeys End" Are Renegade Daleks. Davros created them, but they have obviously turned against him, keeping him in a vault. The Cult of Skaro could be either, but most probally Renegade Daleks because the Doctor said that he thought they were just a legend, which implies that they are old. Older then the Imperial Daleks. But they didn't like the fact that Rose had destryed the Emperor, and the Doctor said that they were above the emperor. So who knows? I'd also like to add that Dalek Caan rescued Davros, so the Cult of Skaro could be Imperial Daleks. And the Doctor said in "Daleks in Mahatten/Evolution of the Daleks" that they were created by the Emperor, so they have to be Imperial Daleks. Some evidence that the Daleks might have re-united in the Time War is that all Daleks are now standerdly gold, like the Imperial Daleks were White and Gold. However in the episodes "Evil of the Daleks" , "Day of the Daleks" and "Death to the Daleks" , there was no set colour to the daleks, they were all sorts of colours and definitely not Grey or White & Gold. And that was before the Daleks were divided into the 'Renegade' and 'Imperial' factions and yet there is a Dalek Emeror in "Evil of the Daleks". How can this be? Could this be that due to the daleks being unified, there was no need for 'uniforms'. But this still doesn't explain the Emperor Dalek being there. the new Daleks' rank is determined by their colour. white= supreme, orange= scientist, yellow= eternal, red= drone, blue=strategist