I have never used Postman, but I am curious, how useful or good, if any, their product is? given the recent bashing it received for being over-valued and being just a wrapper around curl. If people like it and are willing to pay for it, isn't its valuation justified, which I think is true for any startup in general.
That said, it's not worth paying more for than GitHub per seat for my team, so we do without.