I would not bother with any octane or "injector cleaner" product. If you want cleaning action you need to look for some with Fuel System Cleaner in the title or similar. Don't buy anything described as just a fuel / injector cleaner, it needs to say SYSTEM in it and it's going to be more than a couple $$.
Even at that price i wouldn't bother with it. If you have costco just run their fuel it's 5x over the epa limit and i've been running that in everything and my fuel trims are perfect.