I want to scope out in-ear monitors for my band to use at gigs. Can you help me with the following: 1) What price range do these types of things go for? 2) Even if my bandmates did not want to invest, can I get a set just for myself? 3) What brands are the good ones? 4) Where's the best place to purchase them (quality product, service, price, etc)? Thanks in advance!