Very small manufacturing company, need a simple but complete manufacturing/inventory system, ERP... suggestions?

We use around 150 raw materials to produce about 15 SKU.Even thought I feel comfortable working with spreadsheets, the complexity to manage production schedule, inventory (average cost, purchases etc), financials etc is taking me too much time.Any suggestions of SaaS system's, ERP or any other software that can help me manage my business?Has to be cheap, we don't have money at all...Thanks in advance! via /r/business http://ift.tt/2z357J1