What internet package should I get for my Business?

I've been trying to optimize my internet package. They are offering me: Business Cable 25/5 Static for $160, Business Cable 75/15 Static for $200, Business Cable 150/20 Static for $270, 3MB Ethernet ESA for $385, 5MB Ethernet ESA for $552,

My question is why is 5MB so much more than Business cable? It seems like all the Business cable options are cheaper and faster.