DIY Speaker Kits, a good idea?

There's always satisfaction to be had doing something with our hands. We don't have to design crossovers or fine-craft enclosures out of raw materials; just assembling a kit is satisfying, As some folks remarked, you feel closer to your gear when you have skin in the game (I paraphrase). Feels that way when I repair broken gear too.

About resale value... it depends. A pair of big Linkwitz showed up on craigslist a few months back. Very good looking DIY build, the guy was a woodworker, but it had an older driver set. Asking $3.5K if I recall. Just in the time it took me to ponder whether they would be a significant enough improvement over my current speakers, they were gone. Meanwhile, brand name speakers get reposted over for months at a time.

There are so many variables. I built a bookshelf enclosure from a plan from Markaudio that houses Alpair 10’s. I’ve tried them on a few different setups and felt they sounded pretty good. Recently I paired them with an old Harman Kardon A300 and have decided that I really don’t need to look any further. I have a couple decades experience as a carpenter and felt comfortable building them but I don’t think it’s beyond the skill level of anyone who has access to decent tools and maybe a friend who can provide assistance. Whatever the outcome, it’s a satisfying experience and I’d recommend doing so to anyone interested. Do some research first and find out about builds that might pair well with your amp/integrated/whatever

Building a really solid box seems to be a big chunk of the cost of some expensive speakers and there's cheap stuff at Home Depot and Menards that anyone could use to do this.  If you attached a porcelain floor tile to MDF it'd be near resonance free.  It'd cost next to nothing.

The key to having some resale is to pick a very good model to build from a well known vendor. If you go with something too obscure then there's a limited number of people following the design or vendor and without a following..tougher resale. 

I have the CSS 1TDX and 2TDX.  They were fun to build and sound awesome.  When you build something yourself, you have an extra attachment to it.  And the price to performance ratio is very high.