Typically the drains are more sturdy due to the types of materials used and their size. 

We have materials basically locked down for a consistent price but the labor varies so much.

This guy is a wealth of knowledge on building, remodeling and everything that goes with it from finding and managing subs, to purchasing materials, to construction code and navigating the permit office, but all you care to know is how much money he makes??  

That's along the NJT as well..I'll try to get some reports and materials together for the other things you've asked about while I'm doing my reading later this morning.

The material is very cheap and durable.

.- Don't try to skip necessary repairs (it will ultimately cost you more)- Practice your negotiation skills- Buy your own finish materials- Stage (will save on holding costs and may get you a higher sale price)- Hire an inspector to inspect your house before you sell (cheaper to fix things BEFORE the new buyer finds them)

Don't leave until a contract is signed or a reasonable buying price is unreachable.After creating your simple plan then sit down and read all of the materials you might present to a seller, slide deck, bio, proforma, and sales agreement.

Travertine (in my opinion) is a very attractive material and provides that 'wow' factor when you go to sell. 

I really like the look and the style and colors lend themselves well to the area, but the prices are really high ($50+ SF for materials) based on the few calls I've made.  

Trust those contractors to define the scope of work, do a quality job quickly, and not gouge him on material or labor prices.