From the general description you provided for your product, it sounds similar to many other consulting tools already out on the market. So, your primary selling focus will likely be how your product is better than those other products and why the consultant should switch to yours. If this is your situation, than your pricing should be based on the market for similar products, rather than looking at it from a customer value perspective. Your product either needs to be cheaper than your competitors or significantly better (as confirmed by your customers) to get people to switch. If it's not significantly cheaper or better, getting consultants to adopt it will be a steep hill to climb.
Step one should be laying out the matrix of competitors with features and pricing to determine where your pricing needs to be. Then get beta customers on board (for no/low cost, to get feedback quickly) to confirm your product really is better. If your product has a competitive value proposition, then you have a shot.