The real difference: prep-first vs delivery-first
ShipBob is engineered around one outcome: getting a direct-to-consumer parcel to a shopper in two days from whichever of its network nodes is closest. That is a strong model for a brand whose revenue is mostly its own Shopify store. Think14 is engineered around a different outcome: getting your inventory prepped to Amazon spec, stored leanly, and drip-fed into FBA so you avoid storage surcharges. If Amazon is your main channel, the second model is what actually protects your margin.
Cost structure
ShipBob prices fulfillment per service across a distributed network, with plan tiers. Think14 is flat: 0.75 dollars per unit prep, 0.50 dollars per cubic foot storage, and no monthly minimum, so a first test batch costs the same per unit as a full container. For Amazon sellers that predictability matters more than raw node count.
What Think14 adds for India-based sellers
ShipBob does not form your US company, clear your customs, or file your US taxes. Think14 runs the whole India-to-USA chain from one owned Austin facility: US LLC and EIN, cross-border freight and customs, FBA and Walmart prep, and US sales tax and IRS compliance. That is the gap that usually decides it for sellers shipping from India rather than from within the US.