to buy a rocker or not?!?!?!

I've been looking for rockers/gliders I can only find them in babies r us and buy buy baby and I'm not falling in love with any of them especially for the HUGE price tag! I want to feel like I'm sitting on a cloud lol anyways is it really important to get a rocker and if my baby will be sleeping in the bassinet in our room will I really go into the nursery to rock the baby and come back into my room? I'm so torn, this will be our first baby so I need help! Also if they are so popular why don't all stores carry them