More on brushed vs brushless
As much as I like brushless and the lack of a gearbox, for lightweight 1S you really need a gearbox for the best performance - a direct drive brushless just can't compete with the geared drive. So, in addition to the 1S brushed hitting a lower price point, you also get better lightweight performance.
What I plan to do is run this plane until there is a problem with the stock motor and then install a small 2S brushless system (assuming the receiver still has a brushless mode like the AR6400 - it looks like it does in the photo). The cost will go way up, but that's OK. It would, however, mean changing to a 2-blade prop
; maybe I'll look into the solo-pro brushed motor replacements after all. (I have a 2S UM mustang that is an absolute blast.