Dexcom Costs - is $1300 outrageous for startup and 3 month supplies?

My girlfriend is type 1 and has been looking into getting a Dexcom for over a year now. Of course, it's a slow process because insurance companies are involved. There's also been covid that has hampered the necessary appts to get approval.

But now she has been approved and just found out how much it costs. I know being a diabetic is expensive, even with insurance, but this seems excessive!

Is this what other people pay? Or is there some way to get discounts or coupons or something? Please help us.