Evepraisal helper functions intended for use in Google sheets
// Get the total buy price for an existing appraisal
=EVEPRAISAL_TOTAL("gp5av", "buy")
// Get the cost of a single unit of tritanium in jita
=EVEPRAISAL_ITEM(34, "jita", "sell", "volume")
=EVEPRAISAL_ITEM(34, "jita", "sell", "min")
=EVEPRAISAL_ITEM(34, "jita", "sell", "avg")