I am setting up my own business, I have 10,000 leaflets printed designed very well by a company.... I was wondering if I delivered 2,000 a week for a garden company what would the average response be I heard 2%?

It depends on what the business is, and who you deliver them to.

You need to target your audience to prospective clients.

EG: If it's a gardening company, you wouldn't target people who live in apartments - because they have no need of your services.