Should I buy the Teeter F5000 inversion table?

Have you ever used the Teeter F5000 inversion table?Is it worth $300? I need advice.I am 16 yrs. old and I have managed to save up about $400 of allowance.This is a stressful decision to make considering I don't have a job so large amounts of money are hard to come by.Jobs are too in my small town especially during school time.So should I spend $300 on this specific inversion table.Either way I have to get one because I want to grow taller and I am a female and being sixteen I don't have forever to increase my height so I need to make a hasty but wise decision.