Store
Bundles
Exchange MC for C-Bills, or buy a 'Mech bundle. 'Mech bundles include three 'Mech variants of the same chassis, three 'Mech bays, premium time and some include cockpit items.
Battlemechs
'Mech Bay
Boosters
Consumable
Buy consumables using MC or C-Bills. Same price as if you bought them via the MechLab.