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xkcd #2895: Treasure Chests
(imgs.xkcd.com)
Alt text:
[earlier] "Your vintage-style handmade chest business is struggling. But I have a plan."
Only prepare one chest and film it being burried three times.
That way you are only out $1000 and they'll keep searching for the other 2 (non existent) chests if/when they find the chest.
No, no, people will give up if it's just one. You need to do two chests, marked #1 and #3. Film a #2 being buried also, but dig it up immediately.