When I purchased my unit at Market Wharf, I was able to get hardwood floors throughout at no extra charge and that appeared to come rather easily.
I was also able to get the *final* deposit extended but they, too, have very accelerated deposit terms. Initially, all deposits within 270 days. They were very strict on the dates of the first 3 deposits, but the final deposit got extended to 365 days. Still very tight.
As for pricing, usually they take the current state of the economy into account. They may offer a price less 3%, but that's usually a marketing ploy.