Monoprix is in fact a regular small-scale supermarket for inner-city folks; its prices are higher than at huge "marts" such as Leclerc or Auchan, but are aligned with those of other shops in the same segment, like Franprix or Carrefour Market.
They print little puns on the packaging of their own products.
The bad accent of the man doing the narration is a little unnerving; they could have gone with a heavy French accent which could have been funny (maybe), or they could have hired a native speaker. But this sounds like they took the first guy in the hall who said he spoke English.
As well as the accent, the last title on the video also does that French thing where they get English tenses wrong. It's peculiarly French to say 'Since ten years we have the best prices', when you mean 'For the past ten years ...' - I'm not actually sure what the mistake being made here is, some literal translation maybe? But, it's usually a good indicator that the ESL speaker is French...
They print little puns on the packaging of their own products.
The bad accent of the man doing the narration is a little unnerving; they could have gone with a heavy French accent which could have been funny (maybe), or they could have hired a native speaker. But this sounds like they took the first guy in the hall who said he spoke English.