How to use Gazump in a sentence as a verb

As a Canadian I was disappointed to find my familiarities sided more on the US side than the UK. Now excuse me as I go look up 'gazump' ...

Gazump definitions

verb

rip off; ask an unreasonable price

See also: overcharge soak surcharge fleece plume pluck hook

verb

raise the price of something after agreeing on a lower price