Many fields have standard guideline ratios for numbers. For example, in the catalog industry the rule I hear is that all costs excluding labor should never exceed 70% of revenue for a product.
Does anyone know of any such guild lines for the software world, where alot of cost are fixed.
Guild-lines regarding monthly subscription and LTV would be great as well. For instance, I would love to know averages for how long monthly auto-billed customers stick around for. It would be good to bench mark my business against it.