Be very wary
It seems to me to be owned and operated by Indians and only Indian people are giving good reviews to boost its rating. I booked a flight on Fijiair through underpricer and the flight was canceled by the airline for nothing having to do with me. Under the law, this means I am entitled to a full refund within 7 days. 1.5 months after my flight I was canceled, I received an email from underpricer advising that my full refund was approved by the airline but that there would be a $1,000 “cancellation fee” that I must agree to in advance before I can receive my full refund. Absolutely incredible. Let’s see what happens with this, as this is really just theft.