The reason people use the March 809 and similar pumps (Little Giant 3-MD-HC is another one) is because they are food safe and can operate at high temperatures.
I am not sure about that pump you linked. The highest operating temp listed in the description is 212F which is probably not high enough. And, it doesn't say anything about food safe operation, or even what materials the pump is constructed from.
I did find a good deal on a pump on ebay a while back, which I have used for several batches. It was a Gorman-Rupp 1/2" pump with magnetic drive, and used food safe parts for everything the wort would be in contact with. I think I got it for around $45, but I haven't seen them being sold in quite a while. And, it's not perfect. It has barbed connectors on the pump head so I am forced to sit there with a screwdriver hooking stuff up every time I brew with it.