heeheh, you must be coming to upenn since they made me buy one for $500 and i only had to use it in lab
depending on what program you're in, you might or might not need to invest in one of these. if you're in acute care, you'll probably never have to use it again. but in primary care, it's essential. i don't even bring mine to my clinicals (too expensive to lose or break), they provide them at the site.
doesn't hurt to invest in one though. don't settle for less expensive brands. good equipment is worth the money.