As a small business owner, you are the salesperson. No one understands and owns your product more than you do. Is there a reason you are not closing those $20k deals? Do you not have the time? The skills? The processes?
Without knowing the details of your operation, I can only make assumptions. A friend said to me that he is not a sales person. I beg to differ. If you are passionate about something, you will be able to persuade someone to take action on it.
That said, if you are simple unable to close the sales, which is a different issue to address, then hire a sales person. You will need a talented person with great people skills who will learn your product intimately, build rapport and relationships with your leads/prospects and move them through a sales cycle to close the sale.
Hope that helps. Let's get on the phone if you need more assistance. I can definitely help! Best of wishes!