It was actually a very strong argument and one Robb agreed with.

Finally, he changes positions to where he's on his side, cradling his head on an arm tucked under a pillow. "There's consequences to this." He commented, unknowing how the true slave-lord relationship worked. "They might refuse and our identities are known, putting a target upon us." Which realistically is a complete long shot of a chance. "We don't much money left..." Robb was only planning to make it to the dragon queen and figure out funds once there.