Cheapest Hydrogen Peroxide

How quickly did your teeth whiten using soda?
I am looking for a cheap and fast way to whiten my teeth for a wedding in two weeks. I have been reading alot about Hydrogen peroxide and baking soda and what not. I have slightly crooked teeth and so i dont think the white strips will work that well with my teeth. Has anyone used the Hydrogen peroxide for whitening teeth, what was the recipe and how often do i use it. Also, how quickly did your teeth start whitening?
if you are looking for the best teeth whitening, check out this site
http://best-home-teeth-whitening.info
You’ll get a white and bright smile just in 1-2 days and it’ll last for 6 months or longer.
Cheap Tooth Whitening – The Best Tooth Whitening Products