I bought my first iPhone in October (4s) and bought a set of chargers on eBay with mixed results, the main problem was a cheap hard wired wall charger that won't plug into the phone without removing the case.
The USB charging cords at Best Buy are $20 which is a bit pricey. The wall charging units without a cord are $34. That is an offensive price and one of the things that gives Apple a bad name.
Can anyone direct me to reasonably priced quality charging equipment?