grey market

noun

1. a system involving the secret but not illegal sale of goods at excessive prices Compare black market
2. stock exchange a market in the shares of a new issue, in which market makers deal with investors who have applied for shares but not yet received an allotment
3. the market for goods and services created by older people with a comfortable disposable income and increased opportunities for spending it

Example Sentences

In the grey market, LIC shares were trading at a discount of nearly 15 rupees compared with a premium of nearly 100 rupees earlier this month.

From Reuters

“Unfortunately, it is the very communities the ban is supposed to protect that will engage in grey market activity increasing the spectrum of criminality for both youth and adults of color,” wrote Way.

From Los Angeles Times

Exacerbating the problem are thieves looking to make a quick buck by stealing side mirrors of popular models like the Wagon R to sell in a thriving grey market, the dealers said.

From Reuters

The disruption in international transportation caused by the pandemic hurt the grey market driven by "daigou", professional shoppers who buy high-end products abroad - in Europe, but also in South Korea - on behalf of mainland Chinese.

From Reuters

She points out that Solace actively discourages people from seeking hormones on the “grey market,” a term used for trans people sharing hormones within their communities.

From The Verge