A very important part is COMMUNICATION to the regulars, the ones you do see often and know by either face or name. Take a moment and share with them why you had to change up the sauce situation. Be honest and share it was costing too much the way it was. Most regulars will be OK with an open, honest and direct communication from the owner. If not communicated to, they may make their own assumption that may not be positive. Such as "being nickled and dimed"... even when not the case. I hope your new plan works out, it sounds solid.. and 50cents is well worth 2 ounces of a home brewed sauce.
Brian: Weber: OTG + Lime Performer - - Keeping the Armor On - Eph. 6:11