if the gas gauge is broke, you then want to get the whole thing, pump and sender, like in the link you posted.
im just saying buy cheap, and you get cheap, yes it may last a year or 2, or maybe a month. its a crap shoot. they sell them used for around 50 or less as well.
if you dont have a local junk yard, "partslady" sells parts, send her a PM, ( heard good stuff about her sales too) used oem parts last longer then cheap new stuff. if your on a tight budget.