How would you feel about paying $28 for a jar of instant coffee, $9 for a box of instant oats, or $16 for laundry detergent?

The "inflated" prices were recorded last month at remote stores in Queensland, many of which are run by a group controlled by the State Government.

Lockhart River Mayor Wayne Butcher said shoppers in remote Indigenous communities were being ripped off.

"I'm angry because it's very expensive and it just makes life so much harder," he said.

"It's not like you have choices either; you can't just go to Coles or Woolworths.

"It's an extra burden on each household and it's not something we need."

A jar of instant coffee in Doomadgee will set you back $27.63. ( ABC News: Allyson Horn )

And it is not just food that costs more.

Unleaded petrol in Lockhart River was selling for $1.93 per litre and $1.89 for diesel — also at a store controlled by the Government.

A bottle of Cold Power washing liquid in Doomadgee costs $15.80.

"I feel it in my pocket every day," Mr Butcher said.

"I can't justify the cost at the moment."

ABC News selected 10 everyday items at the only supermarket in Doomadgee, in the Gulf of Carpentaria, and compared the prices with the same items at a major supermarket in Brisbane.

These cans of powdered baby formula cost just under $40 in this Doomadgee supermarket. ( ABC News: Allyson Horn )

The total price of the products in the remote community was nearly double the cost of those in Brisbane.

Compare the receipts Doomadgee Brisbane Difference 200g jar coffee $27.63 $9.00 $18.63 1L washing liquid $15.80 $5.00 $10.80 300g baby formula $38.99 $29.99 $9.00 1kg milk powder $13.57 $5.70 $7.87 500g mixed biscuits $9.00 $4.50 $4.50 1kg instant oats $8.88 $5.00 $3.88 190g toothpaste $10.36 $7.00 $3.36 16 pk throat lozenges $8.53 $5.50 $3.03 150g Vegemite $4.96 $3.30 $1.66 2L milk $4.19 $2.99 $1.20 Total $141.91 $77.98 $63.93 Note: Food prices were sourced in Doomadgee on June 26 and compared with the same/equal brands from a major supermarket in Brisbane City on July 2.

Why are the prices so high?

The group running more than 20 of the remote stores across the state, Community Enterprise Queensland (CEQ), is a statutory body of the Queensland Government.

A Government spokesperson said the Government subsidises "fresh fruit, milk, eggs, some baby products and core basket essentials to ensure prices are kept low".

"It also assists communities to have access to "best buys" and "specials" and price matches with Coles, Cairns, on online products," the spokesperson said.

A packet of Black & Gold instant full cream milk powder costs $13.57. ( ABC News: Allyson Horn )

"However, it must also be noted that there are still significant freight costs that have to be borne due to CEQ operating in very remote areas of the state."

A recent productivity commission review recommended the Government divest itself of assets, such as retail stores, which can "crowd out" locals from business opportunities.

The Government took over the operation of most remote supermarkets in Queensland in 2016.

Fancy a biscuit with that expensive instant coffee? This packet costs $9. ( ABC News: Allyson Horn )

Mr Butcher said they were told there would be an improvement in prices, but the cost of some items had gone up.

"They said things would get better, but that's a broken promise" he said.

"Because of the remoteness and lack of employment opportunities, they should consider more subsidies to make things affordable."

The Australian Competition and Consumer Commission (ACCC) said it was concerned about high grocery prices in regional and remote communities.

"While the ACCC Act prevents businesses from colluding on prices … these laws do not prevent businesses from increasing prices," a spokesman said.

"Misrepresentations made at a local level or by smaller businesses will be best considered by the Queensland Office of Fair Trading.

"The Queensland Competition Authority, following a direction from the Queensland Government, can examine price concerns involving monopolies."