The whole point of a price-drop refund is to save money, right? You buy a ticket, the price goes down, you catch it and request a refund for the difference. It should be that easy, but annoyingly enough, it's not. The airlines who offer these refunds usually tack on some sort of fee that tends to eat up any cash you might have saved.
And these days, with the airlines and the online travel agencies revisiting their price-drip refund policies in an attempt to woo back consumers (just last week, both Travelocity and Priceline added price-drop guarantees), it seems a little bit like a step backwards that United would up their domestic price-drop refund from $0 to $150 per ticket for domestic and Canadian travel. International refunds vary, which is fine print-speak for "way more than $150," we're guessing.