Joyce,
Tractorsmart lists the msrp on the RC72-27B mower at $2948. So the dealer is quoting list. He should be willing to give you the same discount as on the tractor.
I dont know how to get list on the non-Kubota items. When you get the brand and model you can do an internet search. Or, just ask the dealer to prove to you what the msrp is from his books.
Many here may not agree with me on this, perhaps, but I think a lot of people make a mistake by trying to buy inexpensive implements after they have bit the bullet to buy the tractor they want. I think this is counterproductive. Consider this: the tractor by itself
does nothing. It is simply an engine that pushes, pulls or turns something else-- the implement. It is
the implement that is doing the work you want done: mowing, cutting, digging, plowing, lifting, etc.
So if your goal is to have a nice mowed lawn, what's the point in having a wonderful tractor and a cheapo mower. You gotta bite the bullet on the whole package, and look at it as a long term (maybe lifetime) investment.
Bush Hog and Landpride are top line cutters along with Woods. You would want a 60" model for a 2710 from any of these manufacturers. I like Woods' brand new Brushbull line for three reasons: (1) their light duty model is heavier duty than the light duty models of the other brands; (2) the "humpback" design sheds rain and doesnt allow water to pool on top of the deck; (3) the humpback creates more space under the deck to hold more material.
I think most people here who have 72" decks on their 27/2910's believe they made the right decision. But no implement is perfect. Here is a thread that gives a lot of information about the deck:
http://www.tractorbynet.com/cgi-bin/compact/showflat.pl?Cat=&Board=owning&Number=53236&page=2&view=collapsed&sb=5
There are two problems with the deck we have detected. One is that some people find it hard to insert the pins that hold the deck up when you want to use a rear implement. The best solution is for you to make, or better yet, ask your dealer as part of the salet o make , a "Von rod". See the pictures Von posted at the end of this long thread showing the long rod he made to solve the pin-up problem. You'll understand the problem better after you see the deck installed and ask the dealer to show you how to pin it up.
Another problem some people have found is that one of the wheels doesnt quite touch the ground when the deck is on flat concrete. Some of that is discussed in the thread I just gave, and more is discussed in a thread called "72" MMM Wheels" in the Kubota Owning forum. Dont get too concerned about this because it is a minor problem compared to other problems with other decks. It can be compensated for, and it is not reported to affect the cut. I am only pointing this out because the best thing to do if you get the 72" deck is to have the dealer show it to you, all by itself, on a perfectly flat floor. If all the wheels arent touching, ask him to fix it, with rewelding if necessary. If its ok, install it on the tractor and lower it to the flat floor. Again see if they are all touching. If not, then there is something crooked in the way the dealer installed the linkages.
More than you ever wanted to know, but I hope it helps.