Ten years ago I paid $300 for two hours of sim time in the sim (747) I would interview in the next day. (LAX at that time). The guy doing the sim prep was a Tiger guy who taught you the exact profile. All my Mil flight time was in little jets. Of all the money I spent in my quest for an airline job, that was easily the best investment I made. Totally took any pressure off. Don't even debate it, just do it.