anyone running lincoln 1400 series on propane?

thinking about ditchin my 1132s double stack electrics for one 1400 series oven just worried about propane usage vs. my elecs now anyone running propane if so how many hours a week they runnin ? how much propane usage a month i know theres formulas but just looking for ballpark idea. thanks guys

I use a 1450 double, and my propane usage is about $500/mo.