The Collaborative International Dictionary
Unvaluable
Unvaluable \Un*val"u*a*ble\, a.
Invaluable; being beyond price. [Obs.]
--South.Not valuable; having little value. [R.]
--T. Adams.
Wiktionary
unvaluable
a. 1 (context obsolete English) invaluable; beyond price. (16th-18th c.) 2 (context rare English) Not valuable; having little value. (from 17th c.)