Each mecha has dedicated container space as the design to secure each of their location inside the base is different.
The wings of Battler Crusher and Battler Marine need to be folded when they are inside the base.
A lock to open/close the base's hatches.
Launch catapults have hydraulic pipe incorporated. ^^
Sample of the special ticket included in Soul of Chogokin Combattler V to purchase this limited Nanbara Connection Base I think.
To be released as a Tamashii Web Shop limited item. The regular price is 13,440 Yen (inclusive of tax), but fans who order this items using the special ticket mentioned above is entitled to 3,000 Yen worth of discount, for a limited period of time only. Spring release, pre-order start date TBA.
More images can be seen in this previous posting.
Soul of Chogokin GX-50 Combattler V will be released on December 23rd (after the change of release date announced this morning) at 18,690 Yen (inclusive of tax).
All images are from Tamashii Web.