Hi, I have a 24”x36”x6” thick Starrett grade B surface plate with very stable rolling stand.
I also have a 24” height gauge that will pair nicely with it. Surface plate new cost without stand runs around 3k. Height gauge new is about $500.
If sold together $1,000 takes it all.
If separate $900 for the surface plate, and $250 for the height gauge. 
Surface plate and stand are very heavy, I can load with fork lift into the back of a truck if needed.