harmony test

hi mums, just wondering if anyone has undergone harmony test? what made you do it? what is your risk ratio then? how much was it? lastly if it's ok to ask, what is the result? my doctor is actually recommending it, but I'm not convinced. 1)my ratio is 1:700 (he said should be 1:1000 to be considered in safe zone 2)i feel it's too pricey. would rather spend the money for baby things etc. hopefully can enlighten me.. thanks