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If something is in short supply, don't expect huge discounts.
If you can put together a deal for cash , and handle your own financing you may be able to swing 15%, discount , but if your willing to wait and see if there is what you want on a dealers lot , in 6 months , you could get 25%.
JMHO: First run on a new model, most dealers will wait for a near full price deal.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.