We did the tour in July. They had a sample room of AKV and a sample of BLT. The tour is at SSR. They also have a model of the THV, but not an actual room you can walk into.
When we were there, if you booked the tour while on site, they offered you a $50 Disney gift card. Because we were staying at the Poly, they offered us $100 to go - probably do the same at other Deluxe resorts. They probably offer more to people staying at Deluxe resorts because the cost differential between DVC and a Deluxe works out favorably for DVC, so they are more likely to close the sale.
If you have time to do research before you go, I would also recommend looking at some of the more widely used resale sites.