Reminds me of UA in the early 2000s - When you wrote to them even with a nice compliment, they paid out 200$ in vouchers. Those could be combined as well.
Lucky used to give talks about it at the Dos and meetings telling all people about it and then I suspect his account was shut down by UA for a few years
Enjoyt it while it lasts and be careful not to abuse it too much . - The comments here about it are the best !