For the people to lazy to do the math. Please note these calculations are based on the assumption that a person is collecting the lowest value of points for each rank.
Agent rank = 30 points in 60 days
Emissary rank = 30 points in 50 days
Envoy rank = 30 points in 38 days
Ambassador = 30 points in 30 days
Legate = 30 points in 25 days
So as you can see it will take quite some time indeed to gear through the vote shop. This system is a "play-to-win" system the more you pay the higher your rank and quicker you can get items you want.