Excellent points. I'd like to at least consider DIY before I pull the trigger on a $200 basket though. Do you have a link?
I owe it to everyone out there to insert a pause into this conversation.
A bag works just fine, it's small, light, cheap, durable, and effective. Cleaning is not hard, just swish it in a bucket of water and hang to dry. The trub/dust is also not a problem, it's just a little more waste in the end.
Most importantly, recirculation during your mash is
not required to make good beer. Grab a sleeping bag and wrap then thing up with the lid on. Presto, no recirculation needed.
I'd consider a basket for the following reasons:
1. You want it simply because you want it. Perfectly good reason, spend the $200 right now and get it done right. I 100% guarantee that you will spend more than that in the three DIY attempts you'll make.
2. You want to go electric. A basket is absolutely the right choice here. Bags work just fine, I still use one every batch because I'm cheap, but the basket is what you want to get the "everything is automatic" mode. All the commercial units use a basket because it simply works better. Again, probably better off spending the cash to have it done right.
Arbor made this guy made one by spot welding a basket onto his Bayou collar:
https://smallspacebrewer.wordpress.com/2016/09/05/the-new-kettle/
I can't find the picture, but I've also seen people simply knock a ton of extra holes into their basket and continue using a bag clipped into it. This has the limitations that SmallSpace explained in the post above.
https://www.homebrewtalk.com/showthread.php?t=233289
Finally, you could buy sheets of mesh and just put them inside the Bayou basket. Might work, never tried.