I think there are two completely different things going on right now for savings on 4Runner.
1st (directly from Toyota.com, location doesn't matter):
"30th Anniversary Discounts
Save up to $1000*
Toyota's off-road icon has been going strong for 30 years, and in commemoration of this milestone, we are offering discounts across the entire 4Runner line. When purchasing or leasing a new 4Runner, save up to $1000 off Limited grade, $750 off Trail Premium and SR5 Premium grades, and $500 off Trail and SR5 grades.
*Savings off of original 2014 MSRP, amount depends on grade purchased or leased. See dealer for details."
- You can see this discount on the Build & Price as part of the Package cost, and also on the Summary page (option code QD). This tells me this is something you would see on the window sticker and would also be built into the dealer invoice. So if you are working off the actual dealer's invoice, it should already represent this discount. This also means that 2014 4Runner's that have already been sitting on the lot may not see this discount, unless it's on the sticker (option code QD). Remember, MSRP (and Invoice) can change during the same model year.
2nd:
- $500 rebate on all 4Runner trims, but is specific to location (really could be any amount based on location, $500 for my location, could be no rebate for your location). Rebates do not show on sticker (MSRP) or invoice because they come and go. Dealer may not even bring the rebate up. It is up to you to know the rebates that are out there. There are also dealer incentives, etc that you may not know about (sometimes found on Edmunds, etc), that the dealer will not tell you about. Dealer holdback is a % of MSRP or Invoice (depending on Mfr). These are the reasons that the dealer will (can) go below invoice sometimes to make a sale.
EDIT: There are actually different option codes (QB,QD,QC) for the discount depending on trim level (amount of discount).