So, it looks like when you first visit Crater side Supply, if you speak to Moira Brown about your life in the Vault, you have the possibility to receive "MS03VaultSuit101Armored", the Armored Vault 101 Jumpsuit with 8DT.
However, if you instead refuse to speak of your life in the Vault, you can then Purchase "MountedVaultSuit101Armored" from Moira's inventory, which has 12DT.
Maybe a Bug?
[collapsed title=Load Order:]
FalloutNV.esm
DeadMoney.esm
HonestHearts.esm
OldWorldBlues.esm
LonesomeRoad.esm
GunRunnersArsenal.esm
CaravanPack.esm
ClassicPack.esm
MercenaryPack.esm
TribalPack.esm
Fallout3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
taleoftwowastelands.esm
WMVM.esm
TTWOptions.esp
TTW_Reputation.esp
TTW_SpeechChecks.esp
TTW_StashPackOptions.esp
TTW_StartupMenu.esp
TTWVaultSuitHotfix.esp
PerkEveryLevel.esp
MojaveDelight.esp
MojaveDelighted.esp
ttw_mojavedelight.esp
TTW Realistic Wasteland Lighting - Reduced Sun.esp
ttw_-_custom_race_ending_fix.esp
FNV-PC idles.esp
KillingKarmaFix.esp
The Mod Configuration Menu.esp
Total active plugins: 33
Total plugins: 33
[/collapsed]