Go for it!

There's a reason it's a bad idea unless you know at least one girl, and the two are into each other. Even though you say you don't care about the latter, it keeps the sexual energy flowing. The novelty alone won't.

With three people interacting, the fewer unknown variables the better. If you find you're only into one of the girls, and they aren't into each other, it can be a real drag. (A good reason NOT to book two hours.)

Rather than jump at what looks like a "good deal", I think you should decide what price you're willing to pay, and wait until you come across an opportunity that doesn't have this many ways it could go poorly.

That's pretty much the question you should frame in your mind. Remember that, to an extent, "you get what you pay for."

3-ways in the p4p world should follow a natural progression. One of which is to at least have an appointment with one of the ladies beforehand. Don't get me wrong, touring providers that offer discounts on threesomes are hot. (heck, I have a review of one) In my case, I saw that this was available, booked one of the girls. Since they were in the same hotel she introduced me to her friend. I liked the original girl enough to want to rebook... SHE suggested the doubles for that one. I accepted. I got my discount... but, I ALSO paid for the initial session.

Would I book a 3-way without knowing both of the girls beforehand? ... maybe if it just 'felt' right, but that's because I've already gotten enough of those under my belt that I can risk the likelihood that I just made a mistake. For your first one, I would recommend spending the time to research, find chemistry, etc. You don't want your first to suck. "seems like a good deal" isn't the way you should be approaching it. You're not buying threesomes in bulk at the supermarket here. Spend the extra effort/money to make the experience everything you want it to be.