Originally Posted by Billy Mumphrey

I spoke with someone at the Mosaic line who had no idea whether the number of required certs was available prior to purchase. She called me back an hour later (after speaking with someone she deemed knowledgeable) to confirm that right now you can only see the number of certs required after purchase. She said they are working on adding functionality to the website at some point in the future so Mosaics can see the number of certs required prior to booking (with no estimate of when this might become available).

I had to cancel and rebook my trip three times, but I was finally able to book a round-trip to CDG for 4 certs total (2 in each direction). As best I can tell, the number of certs seemed to correlate directly to the Mint price (requiring more certs as the Mint price in $ went up, and I saw TATL flights requiring 2, 3 and 4 certs).