The words echoed in Sirius' mind, and combined with images of the Marauders drinking themselves into oblivion and snacking on treats from Honeydukes'. They ran a bit of a Black Market themselves, occasionally, when someone really wanted something unusual--and were prepared to pay dearly for it. A quick run through the tunnel into the basement of Honeydukes'...
"She could get you booze and cloves and pumpkin pasties, eh?" Sirius asked, keeping his eyes focused on the TV, but feeling the tension rise within him. If Ella could get those things, was she using one of the tunnels that the Marauders had used? "How about Honeydukes' chocolates? Or Zonko products?"