Not in the first message. Opening with a specific figure, or asking what allowance to expect, turns an introduction into a transaction before any real connection exists. Experienced members lead with personality, interests and genuine curiosity; the financial conversation follows naturally once there is something worth discussing.
Not at the table on a first meeting. A first date - including one at a Michelin-starred venue - should be about chemistry and conversation, not negotiation. Raising the topic mid-meal changes the atmosphere and puts both people on edge for the rest of the evening, unless it arises organically from both sides.
Before the second meeting is confirmed. The natural window is a text or call within a day of a successful first meeting, once both people have had time to think without pressure at the table. That single shift in timing is what separates an easy conversation from an awkward one.