Seeki.eu lists 450+ properties for sale and 2+ to rent in Sluis.
The median asking price is €459,000, or €4,240 per m² on a typical 108 m², across sale listings that publish both a price and a floor area.
On the rental side, the median asking rent for an apartment is €1,090 a month, across apartment rentals that publish both a price and a floor area.