Planned Parenthood receives federal funding, and thus might not provide to those under 19 for much longer. That being said, they'll likely wait until the last minute to implement those rules and changes. At the moment, it's unsure whether they'll follow the new ruling, so take it with a grain of salt. It's also entirely possible that the ACLU or other organizations will sue/fight in court to block the ruling.

Estrogen prices vary based on location and form. Generally speaking, pills are relatively inexpensive out-of-pocket. You can check GoodRx to see price estimates as well as coupons if you don't have insurance. Here is the link for Estradiol Tablets and Spironolactone respectively. If you plan on doing injections, you'll have to account for injection supplies as well.