Prostitute offering services at a discount when approaching end of quarter while not meeting budgeted figures and/or when facing liquidity shortages in the crack-cocaine-heroin market. Most regulators (aka sex workers union) are against this practice, but proponents of free markets say it is a necessary evil and is one of the keys to success in a capitalist society.
A seasoned Wall Street trader rides his Lamborghini at night in the streets of Newark and stops by a young lady waiting on a corner in the middle of nowhere:

Trader: Hi beautiful, bid 20$ for a blowjob.
Hooker: 20$??? You must be thinking I’m some sort of discount hooker? Ask 50$.
Trader: 50$??? Refresh your market data feed, the crack-cocaine spread is widening like crazy and the heroin60 index is reaching historical record levels. I give you a minute to revise your quote.
Hooker: Sorry about that (while running her smart phone blowjob pricer app). Ask 25$, deal?
Trader: Deal! Get in the car beautiful and be careful with my Italian leather & suede seats.
by Toilette November 11, 2014
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