The term "gouging" is only appropriate when the commodity is essential, and seller has a monopoly on it.
Sorry but I have to disagree, for me it is an opportunistic overcharge.
gouge
gouj/Submit
verb
gerund or present participle: gouging
1.
make (a groove, hole, or indentation) with or as if with a gouge.
"the channel had been gouged out by the ebbing water"
synonyms: scoop, hollow, excavate; More
make a rough hole or indentation in (a surface), especially so as to mar or disfigure it.
"he had wielded the blade inexpertly, gouging the grass in several places"
cut or force something out roughly or brutally.
"one of his eyes had been gouged out"
2.
NORTH AMERICANinformal
overcharge