I'm starting school on the 17th of this month and I was given my list today of things to buy. I have the scrubs, shoes, watch, but i have NO CLUE where to buy the pressure cuff with storage bag, or gait belt. Also I have to buy a stethoscope and I was looking on ebay some are 3.00 and then some are 150.00.... those are MAJOR gaps. How do I know which one to buy. I don't want to go to cheap and it not work or not be acceptable. Thank you in advance!