You get what you pay for in this world. Yes, this TC-550 is a little pricey compared to the 12 dollar too-good-to-be-true deals you get online from Hong Kong etc. This is a really nicely designed little unit that works perfectly with my Olympus LI-90B batteries, plus it has the added bonus of a USB port for charging your PDA devices. Very easy to use, just make sure you plug the battery in properly (check the instructions for that). Simple LED display shows you where you are at on the charging. cycle.
Only gripe is that the Best Buy online store showed that it could only be ordered online, there was no inventory in the (Oahu) stores. On a hunch I stopped by the Honolulu store and they had plenty in stock. It would be good if the Best Buy online / store inventory systems were better in sync.