It is good, but now you are competing by price. I think you would be better off using one of the full color professional brochures. I am thinking Turfco has a good one. They just print your name on the brochure. Or one of these.
Instead of a price, I would offer a discount or an end of season sale. Some kind of special sale. My wife always tries to buy stuff on sale--even if we don't need it. Or include a special incentive, 50 percent off on overseed, upgrade to premium seed if you call this week, free double pass if you call by Saturday, free organic fertilizer (3 lbs of Milorganite), 50 percent off organic topdressing (6 lbs Milorganite). Free tulip bulbs or crocus. Don't reduce your price--sweeten the deal.