There are probably a lot of people taking stock pickups out of their guitars and selling them for the price you want to pay. They may not be bad pickups at all, just not what that person wanted.
You haven't mentioned what style of music you play, but I've got a set of DD HB102's, (JB/Jazz), in gold covers I'd let go for $50 Shipped.
I am interested in the DD pickups though as I've heard them sound good in the past.
How about Dragonfire pickups? https://dragonfireguitars.com/Humbucker-Sets_c383.htm
I've used their regular screamers, phuries, and standard alnico singles. They got some new models in the last month that are a bit unique but are in the $65-100 range. If you don't want metal pickups, there are the Gate buckers (pearly gates type), A2 buckers (8k,16k A2 hot vintage), phuries (8k, 10.5k screamin demon style), or the regular screamers which cover lots of styles.
If by DD you mean Duncan Distortion - the HB103 set. Or - find a Duncan Detonator; Its basically a Distortion with Invader caps in the Duncan Designed Line.
There are probably a lot of people taking stock pickups out of their guitars and selling them for the price you want to pay. They may not be bad pickups at all, just not what that person wanted.