Then if 50% of bookings actually use the "included add-on" with a standard $100 coupon, that's $2000 in services I have to fulfill (for now I'm assuming they all use the full $100 but I'd set it up where it's a discount code and I charge for any extra amount).

I've seen them from $3500 to $10,000, more than that if it's a retail roofer that isn't giving an investor discount

If you are watching any of these home rehab shows , I will tell you straight up , they are BS .

Down payments are a good thing for you, put as much down as you can. what if i can purchase property at a discount so theres some built in equity?

If all works out I'm definitely getting it straight from China.

I wouldn't offer any discount. 

Now in Vegas at our place there there is non discount it cost about 3 to 4X to fill up the Tesla there.

20% discount from the current sale price? 

When I would go down to SF I would go from my home drome straight out to Newport then follow the coast down if we had a tail wind that day great flight and generally 1 mile off the shore and an airport about every 15 to 20 minutes if needed..

Better would be to create a partnership with a local company, like some kind of discount for referring every guest to them to use.