For example, a prefab granite island slab, or soapstone or Corian that we can fabricate ourselves.

That's just numbers I made up but I think some of these posts are fabricated too.

I also have a background in construction and some sales / customer service, as well as enjoy building custom furniture and other fabrication projects. 

They may need a deep cleaning to remove mold particles that have settled in the fabric.

@Steve Kontos ; Truer words have never been spoken, I'm a fairly handy person when it comes to mechanical things (painting cars, welding panels, fabrication) but had never done construction work.

Slabs have to be fabricated, and sized to your space. 

Check out if the floor guy really said anything or if this whole thing is fabricated.

That’s a fabrication and you know it, and before you go through with a keyboard warrior personal attack save your energy.

We decieded the $200.00 was not worth the extra work and took the 2nd counter top back to Home Depot for a refund and we are having a private shop fabricate the 2nd one for us so all we have to do is slap it in.  

You can lift them, level the ground, lay some landscaping fabric, replace them and put smaller pebbles between them.