He has earned a decent wage just off his albums. 2012 classic Hands Up has some bangers on it. Teddy's Bear Picnic being a favourite for annoyingly long time at chez SK
I think he's earned a fucking fortune out of it as well. I believe he cleverly retained his image rights or something similar so he can absolutely rake it in.
I have a grudging respect for Justin Fletcher. Anyone who can juggle oranges while walking towards and looking at the camera singing their own theme tune is alright with me.
Looks like he's still very much on CBeebies (3 different programmes today) but probably just repeats.