I bought a food slicer on overstock.com last year for about $65, I think. Not sure what brand it is, but it's mostly plastic and best of all, it folds up so it doesn't take a lot of space in the kitchen cupboard.
I bought it mainly to cut smoked roast beef thin, like deli meat, and have never had any problems with it. It cuts thin ... it cuts thick, and everywhere in between. Yes, it's a pain to clean, but it sounds like that is quite common.
I just checked on overstock.com and they don't have them any more, but I'm sure you can find some similar foldable slicers at other places for under $75.