It is no big deal if the manufacturer has the parts in question at a warehouse within a radius where it can be shipped in one day by UPS or FedEx ground. I can get New Holland, CaseIH and Deere parts next day for ground rates, but not Kubota because the depot is too far away. NH used to be two days away unless overnighted, but a new depot opened closer to us. Most brands use the same methods, it's just a matter of where you are and where the part is coming from. The Deere parts system is hard to beat overall, though. Not much question about that.