ShipMonk is a DTC-focused 3PL known for its software platform and its strength with subscription-box and ecommerce brands shipping their own orders. If you run a high-volume DTC or subscription operation and want a polished dashboard, it is a capable choice. If your core need is Amazon FBA prep and forwarding, especially from India, Think14 is more focused and usually simpler to work with.
Think14 is not a multi-tenant software platform; it is an owned Texas facility built for prep. That means one accountable team, a flat 48-hour prep SLA, and pricing that does not depend on plan tiers or monthly minimums. You send one carton or a container and pay the same $0.75 per unit either way. Returns come back to the same floor and most are inspected and resold.
The other difference is the India-USA path. ShipMonk does not form your US company, clear your customs, or file your US taxes. Think14 handles the whole chain for overseas sellers: US LLC and EIN, freight and customs, prep and fulfillment, and US sales tax and IRS filings, so you deal with one partner instead of five.