Purchase Agent 2013 Update:
The 2013 version of Purchase Agent from Synergistic/JobOps will integrate with the standard Sage 100 Work Order module. This has been a feature many have wanted, so there should be no more excuses.
No word on whether the price will be the same (special pricing at $999 + $250 annual maintenance), but if a client simply wants to automate the purchasing function based on inventory levels, reorder points, open sales orders, open purchase orders and open work orders, this is an excellent tool with an investment way below Inventory Advisor.