I wouldn't say you committed a saintly act. A saintly
act would be if you saw the last Interceptor on the shelf
and you grabbed it, but on your way to pay for it, poor
little Timmy started crying because he just missed out.
So, being a basically good person, you hand the toy
over to little Timmy who is overjoyed.
But you resisted the temptation of easily throwing away
that hold sign, and grabbing it, and you should be
commended for that. There are scalpers I know (no,
not personally) who probably would have robbed that
Interceptor from the shopping cart of an elderly woman
(if they bought toys) while her back was turned, or
snatched it away from a little kid. You didn't stoop
to their level, so kudos to you