Display ads are not getting much conversions

[brian]

Its less then 1%. From say 1000 clicks I am getting only 2 or 3 conversions.

Oh !! that's too low.
Change your ad positions, try to track down the entire step by step process from clicks to conversions etc.
Is your landing page optimized completely for all kind of users I mean for desktop and mobile, check that out and also check whether the call to action for your sales button is good or not.