Even though its far more problematic than you would expect, because Kickstarter has no official method for issuing refunds.

FORBES: The 5% Fee That Makes Kickstarter Refunds A Tricky Proposition

"This method was not suitable as mortgage interest payments are directly influenced by official interest rates, which would make the new index less suitable for use as an inflation target measure, were the government to decide to do so at some point in the future, " the ONS said.

BBC: New inflation measure proposed