Ive been checking in on a set up that is the same as a long arm but smaller. You can get one for around $1500 but you can only do up to a lap size.
They use only the straight stitch Juki, Elna, Brother,Janomi 6600,and the Viking mega quilter if you want a stitch regulator.The table is a Gracie and you can get extensions for up to king size. Tables are around $600.
It is just like a long arm since you move the machine.