If it were me...
Plan A is searching online for an exact replacement based on the make and model of the vacuums. If you don't want to buy online, a search might at least indicate what local stores stock it.
Plan B is finding something compatible for this model at an online retailer, maybe an Amazon associate vendor or Aliexpress. If you "must do this in person", such an option does not apply though it is usually where I end up. For specialized parts such as direct-replacement power supplies.brick-and-mortar stores will never have the selection that online ones will. Maybe Sayal will come through for you ... but maybe not.
Plan C is lazy but has worked for me as a fallback. There are quite a few "universal" power adapters available that have switchable voltages and come with an assortment of connectors so they can fit almost any laptop or appliance. Assuming one of the connectors fits your vacuum and the voltage can be switched to match, the one remaining variable is whether the amperage is enough. You may not need to go to Sayal for this;
here is an example of a low-amperage adapter at Canadian Tire for $40 and
a higher-amperage one at Walmart for $44. The ones available online at Amazon are considerably less expensive.
- Evan