I'm going the other way on this one
First off, all good 4 letter combo's are taken
no: qwyujkzxv
are all gone.
period.
And secondly, why to you is a 4 letter.com worth nothing, but a 3 letter.com worth say $1000-5000+- to a speculator and a 2 letter.com worth $20000-$50000+-.
I had maybe 90 of them at the most and they all got typein traffic.
Whether it be one two, five or ten uniques a day.
Plus, I made some average end user sales.
Mid 3 figures each.
So I put in $600ish in cash and I made around $2000 in 3 months after I sold some to end users and sold the rest to a speculator.
Good Luck
I'd stay away from x z y q 's but otherwise in the long term they are a decent buy..