What is the fine-grained topic of the following text: The overall price was the motivating factor, and since the Blueair 203 air purifier [now the Blueair 205], was on special at the time, it was the one we chose to go with – although, admittedly, we didn’t notice at the time of purchase that the filter changes for the Blueair 203 would be much more frequent than we have been used to with the Healthmate Jr. Only return the topic.
Choosing the Blueair 203 air purifier based on price and frequency of filter changes