It would be really usefull (and an excellent add-on-sales tool, I think) if there were a "wallet" for me to log in every model number of electronics product I have; even if you don't sell it. You would know that I own a Nikon D800 and could tell me every time a new lens, accessory, or bundle goes on sale (or you could email me that the new D850 is coming). I wouldn't have to waste time logging on and searching for my camera, seeing nothing is on sale, then having to go on to the next piece, and so on and so on. I could see an entire currated shopping list of accessories that will definitely fit my products and even all the new upgrades available. Every comparable piece you have on sale could be in a correlated tab. I don't know, maybe that just seems valuable and efficient to me. I'm sure you have thought of this and have a reason it wouldn't benefit you.