First off, we have the Ruins sprue. This is one of the two-parters, and is included in all the kits. The Sector Imperialis Ruins kit consists of only this sprue, but unless you're really desperate for more of them, it seems like a bad deal at US$35 for just the one sprue.
Next up, we have the Wall Sprue. Another common one, part of every kit other than the Ruins, and two of them are in the Sanctum and Basilicanum kits. These are where the scale differences from the previous GW Ruins really start to be noticeable, being far taller, and making use of that for some fairly impressive arched windows.
The last common sprue is the Floor Sprue. Or rather, the Ruins and Floor Sprue, since half of it is made up of partial wall sections and various fittings. The Administratum and Sanctum each come with one of these, while the Basilicanum has two.
The first of the more specific sprues is the Columns/Flying Buttresses/Small Statues Sprue. Available only in the Sanctum, there's some cool stuff on here, and the presence of this along with the extra Wall Sprue makes a good argument for shelling out the extra US$25 over the Administratum's US$50.
The remaining sprues are unique to the Basilicanum kit so far. At least among the individual kits. The first of them, the Columns and Arches Sprue, is also included in the Kill Team starter set. It looks like this is mostly used for finishing off walls that would otherwise end with one of the open portions of the wall sections, and the large arched entryway.
Rounding out both the Basilicanum and the collection of sprues, we have another two-parter, the Large Statue Sprue. These guys look to be about on the same scale as the Space Marine statue from the Honoured Imperium. Or in other words, fucking huge. Definitely another that I don't mind being restricted to just one kit, tho I kind of wonder if they're going to get released on their own at some point.
Breaking it down differently, these are available as four individual kits, plus the Kill Team starter. In increasing order of cost, we have:
- At US$35, the Ruins set, which as far as I can tell, consists of just one of the Ruins Sprue. Doesn't seem like a very good deal compared to option #2.
- The Administratum set. US$50, only $15 more than the Ruins, and it also comes with one each of the Wall and Floor Sprues.
- Stepping up to US$75, we have the Sanctum, adding another Wall Sprue and the Flying Buttress/Small Statue Sprue. Seems like a pretty reasonable upgrade price for the extra content. Basically a 50% price bump for a 67% content bump, and it's the only place to get the Small Statue Sprue.
- The Basilicanum, the last and largest of the stand-alone sets, swaps the Flying Buttress/Small Statue Sprue for the Columns and Archways Sprue, and adds a second Floor Sprue and the Large Statue Sprue. At US$100, that's another $25 to jump from 5 to 7 (almost 8, because the statues are huge) sprues. Again, seems like a reasonable differential, but it's clearly one you're only going to get if you want the big statues.
- Finally, at US$130, the KT starter doesn't quite come with an exact match for any particular combination of kits, but is roughly equivalent to one each of the Ruins, Administratum, and Sanctum sets (just with the different Column Sprue), which would be US$160 to pick up separately. Add in the two Units (whether using them or selling them), and that's a pretty good bundle deal.
They did add a couple of different combos of the base sprues to the Sector Mechanicus line a while after the original release (the Promethium Forge and, IIRC, the Ferratonic Incinerator), so I wouldn't be surprised to see a couple more sets show up using just these sprues, and we'll probably also see some completely new add-ons as well, like the Galvanic Servo-Haulers and Promethium Regulators were for Sector Mechanicus.
Until next time, y'all have a good one, y'hear!