You can still find some parts there: pots, wire, DMM, fuses, but don't get your hopes up. What's missing is window shopping for neat or novel stuff, now you need to do this online via pics and vids, but unless its done well and in high res, its far removed from a live demo.
If you need to buy retail, just go to their website, check inventory and its accurate in my experience. If your local store has no stock, click on what you need and do free shipping to the nearest store for pickup. You'll pay upfront and taxes, but unlike the blog, if all you need is an $1 fuse, you don't have to pay whatever S/H it will be from a non-RS store, but it will take 1-2 days for it to reach your store.
RS prices are very competitive compared to real parts store like Jameco or Digikey and even for 1-2 day shipping, is faster than the cheapest USPS or UPS ground shipping.