Good contracts go fast. The ones that sit on the brokers sites for weeks tend to be the 'turkeys' imho. (priced too high, high point contracts, stripped contracts, ect.)
If the contract you see if perfect for you - go for it. If there is something you are settling about (not good use year, stripped of points, not enough points, too many points) then instead of making an offer, why not contact some brokers and tell them what you want exactly, and see if they can find it for you. Or, as soon as a 'hot contract' comes in, they email you before it gets listed on the site. Be ready to offer right away though - have your budget set in your mind and stick to it!
I read on some thread here that one Dis Vet stipulates the amount of time the seller has to sign back the offer to you, three days or something like that. The reason being is a seller can sit on your offer for a week, not signing back the offer, waiting to see if they get a better offer. So, the three day stipulation makes sure they dont do that.
Brokers work on the weekends. I started my process on Labor Day monday! (my poor broker :

) Go ahead and email your questions or make an offer today, I bet they answer back very quick.
Disney has not been active in the ROFR lately it appears. However, a good broker will tell you how to stack the cards in your favour to pass ROFR. Its not just price per point according to him. I used **** from **********.com, and helped me put together the offer after he found the contract. (Its such a good deal for me, so much so I wonder if it will pass

)
One thing I have learned after my offer was accepted and sent to Disney for ROFR..... dont forget exactly what price per point is....
What I mean, I was so busy trying to get the best price per point I could, I lost site of the fact what 1 buck per point meant on my contract. It meant 270 bucks on a $24000 contract. If I went through rofr with my contract being at 90/pt, I think I would not be so worried right now. If this deal gets squashed, I know I will have lost it over 270 bucks, and will be super mad at myself right now. So, try and get a good deal, but remember, what exactly does that one extra dollar per point going to cost you?
Its like,
DVC points are like Vegas gambling chips. Why do Disney and Vegas both take your money, turn it into something that you does not look like money (ie a point or a chip)? Because people stop thinking about them as money, just objects, and then they are much more likely to spend them! Here I am, waiting to get a lovely 270 pt contract, and I am thinking - huh- gotta get me some more of those points. Maybe a 100 pointer in the next year. I am not thinking - I need to spend another TEN GRAND, and then commit to 500 bucks a year for the next 35 years of my life!!!
Hmm, Disney and Vegas operate a little bit the same way,,,,
Ok, I really need to pass ROFR, and then I can get on with my life.
Good luck on your purchase!