Some good thoughts and concerns iSign. Bringing in a sales person to smaller businesses like most of ours can be a tough pill to swallow, as we, as the owners, are used to full control of all aspects of the business. In activating a sales force, you have to be willing to "loosen the reins" so to speak, and give the sales team some leeway to create new business. And that in itself is the key - that they are creating NEW business.
The biggest mistake I think most of us make is reflected in the comment you make at the end of your post "What's to stop a sales person from selling a $1100 job for $900, and then they only make $20 less & I'd end up losing $180." You are looking at it that you may be losing $180, instead of seeing it as gaining a $900-1100 sale, a sale you possibly wouldn't have made without your sales rep out looking for the business. In our industry, we have the margins to absorb a price fluctuation like that (unless we are selling banners at $2 a sqft).
Keep in mind that the main job of a sales team is to be out creating new business, not dealing with the clients you currently have. They also have to preform, or they go hungry. Consider that at a 20% commission, the sales rep needs to bring in $20,000 to $30,000 every month just to make a decent living. That means an extra $240,000 or more in revenue for your business every year, for each sales person, which leads me to my next point...
While our first instinct is to complain about having to pay someone 20% of sales they produce, and then worry about them leaving money on the table to get the business (see above), we overlook the financial benefits that come with increased business. With higher sales, your business is (or should be) running more efficiently. You have greater buying power which can translate into lower material costs. Your shop staff should be producing more product working the same hours. If we took the time to add up the potential savings from increased efficiencies and lower material costs, I have no doubt they would offset most, or all, of the sales person's cost of employment.
I have learned that having a sales team is not for everyone. Some business owners have a hard time letting go, others fail to see the value a sales team can bring, and there are also those that are quite content with the business they have. Further, many have had bad experiences with sales staff, and therefore view all sales people in that same light.
So, before considering bringing in a salesperson, there are a few things to consider...
1. Can I let go, or am I a dictator for life?
2. Do I really want to increase business?
3. Do I have the Margins to support a sales commission and possible discounts?
4. Can I leverage higher revenues to increase efficiencies and lower material costs?
5. Can I work with the guy in the clown suit (your potential sales person) everyday?
6. Do I really want to increase business?
7. I'm not really a dictator, am I?