How can i convince my grandma to buy me a 2004 scion xb for $8,995?

kbb on this car would be anywhere from $7,400 to 9,100 depending on options. but paying $9,000 for 90k? especially in this time of rising gas, and low car sales. not so smart. for your first car you should get something a bit cheaper. or buy smart. for example if u know anyone with a used car lot ask them if they can find u a car that u might like at a dealers auction. ive seen 05 scion tc's with 40k on them sell for $6,000 in great condition...what im saying is dont think that some car u find is the perfect car and get all excited about it...there is ALWAYS something better out there.(experience) keep looking