Wiktionary
underselling
vb. (present participle of undersell English)
Usage examples of "underselling".
I think they're going to find out very soon that they're underselling her.
The Courier's Tragedy was being put on by a San Narciso group known as the Tank Players, the Tank being a small arena theatre located out between a traffic analysis firm and a wildcat transistor outfit that hadn't been there last year and wouldn't be this coming but meanwhile was underselling even the Japanese and hauling in loot by the steamshovelful.
Besides, if you do that, you can spend the money you didn't spend trying to do it all by underselling him in one area and gaining market share.