Hi Tony: The email Jim gave may help in identifying older models that are still sold by Remington. I know some older models and discontinued models also occasionally show up on Amazon as certain dealers have older stock items.
For me, I've obtained many, new, vintage Remingtons from eBay, but you need to be careful. Some are still new and wrapped, but others are "Open Box" and may or may not have been tried. Classic older Remingtons like the XLR, DA, and DF series are frequently available, often factory sealed, so are brand new. My caution, though, is that if you buy a rechargeable, battery shaver (any brand) as opposed to a cord-only shaver, if the shaver is vintage (roughly 25-35 years old), the battery may no longer be workable, making the purchase a potentially risky investment.
Many of the "older" shavers are pure electric, not battery, so they would almost certainly be workable out of the package. Good luck.Tad