Fuel recommendations during the rising gas prices!

I run unleaded plus 89octane in my 340 used to run 93 octane until the gas prices started getting out of hand.You can use an octane booster but until you buy regular unleaded and the booster it's gonna cost you just as much if you bought the higher octane to begin with.Don't know what the gas prices are where you live but here in central Pa. regular unleaded is $1.99 a gallon. :!: