So I called my local BJJ school to arrange for a free introductory lesson. I also enquired about prices...
PHWOAR! Not cheap!

Lessons = $72 / fortnight (approx. $3k / year)
Uniform = $190+
And apparently you
have to buy their school's uniform which is covered in their logo; I don't think they'll let me use my old Aikido gi (which is the same thing, but w/o their logos). Just... wow. The lesson cost might be worth it if I were could attend 3~4 lessons per week, but currently I'm lucky if I can train once a week. And I really can't justify paying nearly two hundred bucks for a gi... jeepers crikey. The only upside is that there's no annual membership/enrolment fee -- most likely because it'd be
more than paid for by the exorbitant lesson fees. Especially w/ my daughter starting school next year, as appealing as BJJ may be, I just cannot justify the expense.