lol I blame you not one bit. Unfortunately the battery/charger combo is the greatest expense of our hobby. (Unless of course you want something custom milled and powder coated.) We want to go as inexpensive as possible, but if we go too cheap then replacement costs could ruin the goal.
What ever battery you choose, make sure you use care in selecting the right charger for it. Li-ion batteries charge rates are not the same as others. Some chargers claim to be able to charge them fast, but it will be outside of the battery manufacturers specs and can be harmful to them.