Auction kinda seems like the money YOU get from it will go to the charity, rather than the $25 you paid for it.
__________________
your: your book | you're: you are ||| its: possessive! | it's: it is
their: their book | they're: they are | there: over there
to: going to the store | too: too much | two: 2!
lose: opposite of win | loose: your mom |