In advance of interviews take the time to be sure your objectives are crystal clear. Know what you want to avoid getting sold a bill of goods. I suggest you assess all potential vendors against the following six criteria. The objectives of the service or product you are considering must meet your objectives. Ask for specific evidence of how the vendor has met client needs in the past.
Cost is often difficult to pin down.
While suppliers usually don't intentionally hide costs, most assume the buyer knows about extra costs inherent in a purchase. Frequently, these additional costs are negotiable depending on the size of your purchase. Be sure to get all costs in writing, along with a statement that there will be no additional costs. Even more important that the cost of outsourced training is the value your people will receive. Price alone should never be the sole determining factor.