You can go here for direct purchase the full bundle for your watch.
1) Install the clock face from Fitbit app gallery as usual.
2) You will get a message with a code on the Fitbit watch.
3) Visit web page indicated on the message (or this generic kiezelpay.com/code), and enter the code shown on the watch.
4) When you are about to purchase a single clock face, will offer you all bundles this clock face is part of.