Baby monitor?!

Not even sure if one is completely necessary, being that she's going to sleep in a bassinet by our bed( she has crib in the nursery upstairs & we have a bed room up there as well but i just think we're gonna sleep downstairs bc the bathroom & kitchens down here and thats where we sleep now) but itd nice to have when we want time to ourselves after putting her to sleep & stuff. Anyone suggest a decent yet cheap monitor with picture??