You’re probably better off financing vs. leasing. For a lease to make sense you need:
-Discount from MSRP
You’re getting none of those. M340i supply looks better (checks with some of the brokers such as clutch or iac) but probably not as much supply as X3. Reach out to some of the brokers, you can probably finance the car for less money and without some of the bogus addons. Personally, i’d wait a few months for supply to improve if you don’t need it ASAP.
What’s the MF, do yo have a breakdown similar to the calculator here? There are many ways to get screwed over on a lease, so it’s generally better to go in knowing your numbers and the market (what’s the residual, base MF right now, and how much discount are you shooting for)
It is regional and also depends on the brand. Your region is not a very competitive market so dealers are not inclined to discount that particular trim. If you are not in a rush, I suggest placing an order, or perhaps look at other possible makes/models?