Dakota Johnson and Chris Martin keep it casual while stepping out on a grocery run in Los Angeles

Dakota Johnson and boyfriend Chris Martin are certainly not cutting corners when it comes to staying hydrated.

The couple were seen leaving an Erewhon market in Los Angeles on Sunday, carrying a $30 bottle of Ophora water, which promises to be ‘hyper-oxygenated’. 

Dakota, 32, let the Coldplay frontman, 44, carry their bag of groceries – including the expensive glass bottle – as they grabbed coffee on their way out of the store. 

Prices have long been mocked at Erewhon – dubbed ‘L.A.’s most expensive grocery store’ by Newsweek, in an article that pointed out how a simple bottle of vinegar can set you back $50. 

Better together: Dakota Johnson and Chris Martin were spotted leaving an Erewhon market in Los Angeles on Sunday

The Ophora water brand describes itself as delivering ‘unparalleled oxygen content’ with ‘superior intra-cellular hydration’ presumably to justify the high price. 

On the company’s website it says: ‘OPHORA Water Technologies produces Water For Wellness as nature intended it to be. OPHORA’s restructured functional water is not only nano-pure but Hyper-Oxygenated.’

‘OPHORA also designs, engineers and manufactures state-of-the-art water improvement products and systems. Our mission is to create innovative, chlorine-free, no-waste, green technologies for drinking, bathing, showering, and swimming.’

Taking it easy: Johnson tucked a shirt bearing a graphic for Bruce Springsteen and The E Street Band into a pair of wide-legged sweat pants during the outing

Taking it easy: Johnson tucked a shirt bearing a graphic for Bruce Springsteen and The E Street Band into a pair of wide-legged sweat pants during the outing

How much?! The stars were seen carrying a $30 bottle of Ophora water, which promises to be 'hyper-oxygenated' (pictured above)

How much?! The stars were seen carrying a $30 bottle of Ophora water, which promises to be ‘hyper-oxygenated’ (pictured above) 

Erewhon has outlets in Calabasas, Santa Monica, Pacific Palisades, Beverly Boulevard, Venice and Silver Lake.

Meanwhile, Johnson and Martin have been romantically linked ever since 2017 when they started off their relationship with a private getaway. 

They made headlines in 2017, when they jetted off to Israel at the beginning of their relationship. 

The actress was previously linked to actor Jordan Masterson and singer Matthew Hitt before she began dating the musician.

The songwriter was notably married to Gwyneth Paltrow from 2013 until 2016, and they share a daughter named Apple and a son named Moses, aged 17 and 15, respectively.

The happy couple went on to receive the approval of the actress’ parents, Don Johnson and Melanie Griffith, following the start of their relationship. 

Dressed down: Martin opted for a form-fitting t-shirt and pairs of black joggers and athletic shoes for the grocery run

Dressed down: Martin opted for a form-fitting t-shirt and pairs of black joggers and athletic shoes for the grocery run

Johnson and Martin later opted to get matching tattoos in September of 2018.

Rumors about a potential pregnancy began to circulate the following month, although the actress shot them down.

Last January, the singer’s ex-wife publicly voiced her approval of the Suspiria star during an interview with Harper’s Bazaar. 

The actress later directed the video for Coldplay’s track Cry Cry Cry, which was released last April. 

Making an impression: Johnson and Martin made headlines in 2017, when they jetted off to Israel at the beginning of their relationship; she is seen in 2019

Making an impression: Johnson and Martin made headlines in 2017, when they jetted off to Israel at the beginning of their relationship; she is seen in 2019

In the past: The songwriter was notably married to Gwyneth Paltrow from 2013 until 2016, and they share a daughter named Apple and a son named Moses, aged 17 and 15, respectively; he is seen in 2017

In the past: The songwriter was notably married to Gwyneth Paltrow from 2013 until 2016, and they share a daughter named Apple and a son named Moses, aged 17 and 15, respectively; he is seen in 2017

Johnson and Martin went on to purchase a house in Malibu this past January.

A source spoke to Us Weekly and told the media outlet that the two were ‘very excited to move in.’

They added that the two ‘are really thrilled and happy with their purchase.’

Still stunning after all these years: Chris' ex-wife Gwyneth Paltrow at the Gucci Fashion show wearing all red this month in Hollywood

Still stunning after all these years: Chris’ ex-wife Gwyneth Paltrow at the Gucci Fashion show wearing all red this month in Hollywood