Germanshepherdsmum
It’s that memory playing tricks again. He probably meant they bought furniture on his personal account at Harrods.
It's not really the same though! I think once Harry had shown Meg his humble hovel abode, they could have found some freedom with a trip round the North Circular to the nearest Ikea, then once they'd picked up their flat pack and heaved into one of their gas guzzlers vehicles, after enjoying the in house Swedish Meatballs of course, they could have further bonded together putting together their furniture, until of course they find that one inevitable screw missing, always enough to send anyone Spare!