You could check with
Sunset Valley Orchids ... the home of Fredclarkeara After Dark ... not sure if the cultivar 'Black Pearl' is available, but they have bred other dark flowers in the Catasetum group. The website has mostly (or completely) seedlings, but they might have some things in bloom (or better, close to bloom, blooming ones would be very difficult to ship) since we're heading into show season and they do sell blooming plants at shows. (If already in bloom, probably not ship-able, the slightest jostle makes them eject their pollinia and then the flowers fade, but in spike maybe)