Peristaltic pump questions

[bues0022]

I think I’m looking at getting a peristaltic pump for my kalk bin system (reservoir, pump, timer). My aqualifter isn’t very consistent. I saw on amazon some cheap pumps that are pretty bare bones. I have power supplies I can wire up to it, but any idea if any of them are worth the $15 even? I have to pump the water up about 4 feet. If not, what’s a halfway decent single head unit I could get? I don’t need bells or whistles (I have a timer I’ll be using) - I just want it to pump relatively consistent and not backflow when it’s not pumping. Is anyone trying to get rid of one for cheap? Other ideas?