for future reference, just go to Re-Tail and give Reese a worthless item (such as a regular flower) to sell at a really high price (max is 999,999)
so like for 1.5 mil would be 2 items, one at 999,999 and another at 500,001
then you just lead your visitor to your Re-Tail and they purchase said expensive items and you drop the actual purchased items outside afterwards
(or you could just put up the actual item to sell in Re-Tail, provided the game will let you)
though keep in mind the bells won't go into your account until the next time the game hits 6am