Without knowing the actual details. Which projects and how much initial price VS HOC price.
Is hard to tell is a good deal or not yet.

I doubt 99% of the units being sold will get a genuine 10% discount.

Most likely if you went to the sales gallery today you could already buy it at the 10% discount.

Unless it is some overpriced shithole.

if u able to keep track of all the projects there whats their early bird price, subsequent increased price and etc to compare with the price u going to see in the fair... otherwise how do you know its giving discount or high rebates... it could be they mark up the SPA price against and give high rebates... and u happily thought u get a good deal...