I think that's the going rate for being able to walk in from your car and walk out with them in hand. You might find them cheaper on -bay, but you may also buy counterfeit ones there as well.I've seen them at Target in Orlando. The price was ridiculous, though. 27 dollars for 10 cartridges.
have a stock of Sensor and Sensor Excel carts so not in the market at the moment, but it struck me that Atra carts wee on the racks in those stores and Sensor carts were not, maybe just a local issue, but thought I would see if anyone else saw them gone. thanks all for your observations