For the record, there are no mandated inventory requirements. Like any other manufacturer, getting in as a dealer generally requires a certain buy-in first order. Usually these are tiered, and you can come in as a dealer at the bottom level or if you buy more, perhaps a distributor. There are generally benefits to buying more, having the complete line, other brands under the same umbrella, etc.
There is usually a visit with a sales rep as well to verify you are a legit business (vs a bunch of guys trying to set up a group buy in order to get discounts) and establish a relationship. After that credit references, processing of an application, and other paperwork.
Benelli is pretty decent and reasonable, as well as similar to most manufacturers. Everyone wants their product to be represented in the best light possible and by knowledgeable sales people so they do their part to check you out.