Not As Common?
So someone actually did it?

Lil bit of oesophagus for depth, maybe?
Oh man, jokes write themselves.
Old buddy of mine bought himself a six year old girl off some gypsies like a decade ago. No questions asked, just 5000$ and here you go.
(Probably important to note here that my buddy wasn’t a pedofork but involved in some do gooder work against human trafficking. Yes, I appreciate the irony.)
With some of the kind of surgeries these Mengele docs are researching or doing already, it’s only a question of time before there’ll be a black market in body parts for troons. Buccal tissue, vaginal tissue, uteruses, you name it.
(Yes, they’re researching or already doing uterus transplants, and troons over on reddit are cooming in their pants over future possibilities.)
Just give it 5-10 years if the current climate continues, and you’ll see.
There are plenty of shithole countries where some poor slum woman won’t be missed and plenty of countries where doctors will do whatever as long as you pay them.
I read a review recently from a troon who went to Thailand for SRS. The entire initial examination took 5 minutes, before the doctor announced “If you want cut-cut, I can do cut-cut!” And of course didn’t bother to read the therapists letter the troen brought, which the doctor wouldn’t have been able to understand anyways.
Think about how wet your mouth is, can you imagine that down there in an inverted dick? Sounds gross to me but I'm not fucked in the head.
A “vagina” that’s constantly soaking wet is probably many troons ideal scenario.
Think of how pornofied these deviants are. A soaking wet vagina is the quintessential peak of “womanhood” for them. (And in many cases the only kind of vagina they’ve ever seen.)