A small smile appeared on his face as Sirius agreed with him. Knowing that his brother also had the address helped significantly. They'd have to send things the Muggle way, which would take a few days. Better late than never though, and if Remus staying with them for a while would increase Sirius' good mood by even a fraction, Regulus was more than willing to risk it.
"Okay, that's good," he said calmly, thinking things through in his mind. "We could either send him money or find some way of getting him here. Judging from what you've said, the former seems futile." The quiet, bookish, modest Remus that Sirius had described would probably try to send it back, or failing that, would give it away. "We could get one way, non-refundable tickets though." Shooting random ideas off helped him think. It was going to be dangerous, yes, but he was sure it would all work out in the end. They had been lucky so far, hadn't they?