comparison-shop

[ kuh m-par-uh-suh n-shop ]
/ kəmˈpær ə sənˌʃɒp /

verb (used without object), com·par·i·son-shopped, com·par·i·son-shop·ping.

to compare prices and quality of competing merchandise.

verb (used with object), com·par·i·son-shopped, com·par·i·son-shop·ping.

to compare prices and quality of merchandise in (competing stores) to determine the best value.
to compare prices and quality of (competing merchandise).

Origin of comparison-shop

First recorded in 1965–70