It seems that Apple (AAPL) fans are pretty intrigued by the iPad mini. MarketWatch reports that “two major resale sites reported eye-popping surges in business in the run-up to the iPad Mini launch” as said that resales of iPads on its website surged by 700% on Tuesday while “reported that trade-ins for iPads rose over 1,000% on Tuesday.” What makes these numbers particularly surprising is that Gazelle and NextWorth both estimate that around 70% of Tuesday’s resales were of third-generation iPads, which Gazelle says can still fetch up to $495 from interested buyers. Gazelle chief gadget officer Anthony Scarsella told MarketWatch that some users are planning to sell their old iPads at maximum price and then pay $329 for the iPad mini, thus netting them a profit of roughly $170.