I shopped Cherokee Sixes and Lances about 3 years ago. At that time, hull value being the same, the retract was about double, 2000 vs 4000. My insurance hasn't really come down, but I've been raising my hull value. I've heard of guys recently having a hard time even getting quoted on a retract without an IR.
The piper gear is pretty simple. I'd guess it adds $500 or so to my annual inspiration. I've probably spent $5k on it over three years, but it was pretty neglected when I got it, and most of that was in the first year.
All in all I'm glad I got the lance over the Six. Assuming it's 20 knots faster, that's 9000 more NM I've covered in 450hr. The Six would take another 70 hours to cover that distance. At $200/ hour, I've saved $14,000. At least that what I tell myself
Several mooney guys here who can tell you what the gotchas are. Coffee and donuts as I understand it.