I bought a dream

Long time ago while "Heian period" (between AD794 to AD1192) in Japan, a woman worked at　the palace bought a lucky dream from her friend.
"I had such a nice dream last night."
"What was it like?"
"I saw a beautiful big full moon, and it mirrored on a lake."
A woman heard that story offered exchange that dream to a beautiful comb.

Later, the woman bought that moon dream got married to a very noble and rich guy and married happily ever after.

When I was about 13, I bought my brother's dream.
"Hey, I have a dream to sell you."
"What is it?"
I don't exactly remember his dream, that was an exciting dream. There were some famous politician in cast, and sounds fun.
I don't exactly remember what I gave for it, may be a knickknack.
I don't know if it was a lucky dream or not, so far, I don't know if I'm lucky or not.