KSI and Logan Paul's Prime energy drinks have been spotted selling for £8.50 each.
The extortionate price for the 500ml bottle comes after the rapper blasted supermarket resale prices.
Internet sensation KSI said this week if the drink is selling for anything above the price of £2, it isn't a decision made by Prime - but the shops selling it.
And one store has been flogging the viral drinks for nearly £10 a bottle.
Ministry of Vapes, Blackburn, has been trying to cash in on the hydration drink by taking advantage of its huge popularity.
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Shoppers have been prepared to queue for hours to nab the drinks made up of coconut water, electrolytes, and vitamins.
The drink is so hot among youngsters that some desperate parents have travelled more than 500 miles just to get their hands on a bottle.
Speaking on Capital Breakfast with Roman Kemp, KSI said he doesn't like the greedy resellers.
He said: “I don’t like the resale.
"I hate the reselling so like even when Asda tried to up their prices to £2.50, I was tweeting them like 'No, no, no. This is out of order. This isn’t Prime doing this. This is Asda'.
"And instantly they brought it back down to £2.”
One off license in Surrey also had a go at selling the drinks for £10.
Walton Food and Wine had also been selling them via Deliveroo orders for £20 - but staff have since boycotted the energy drink.
One shop worker said: “My friend gave me one or two boxes.
“They cost me £8.50 per bottle, so I sold them for £10 each.
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“Some customers ask and it’s very expensive to stock, I don’t want to lose custom.”
The £2 drink has even been flogged for upwards of £50,000 on eBay.
The drink's popularity grew after YouTube stars Logan Paul and KSI promoted the drink around high-profile celebrity boxing bouts in the UK.
During a live stream, the pair said they wanted to "rival the biggest companies on earth" with their products - including "Pepsi, Coke, Gatorade and Powerade".
The drinks are selling in 11 flavours - including blue raspberry, tropical punch and grape.
