I think that's fair enough though. If the product ships with a different plug attached then it makes sense to have a slightly different number. With most tech brands (Dell monitors spring to mind) that variation is consistent across their lineup and across the slightly different models they put out each year.

Not sure if this is common with the higher end TV's, but with the more budget brands sold in supermarkets, it's not uncommon to find an otherwise identical model in multiple stores, but with slightly dithering model numbers, or in some cases, complete rebrand (box and badge).

Yeah, I have noticed that as well. The big chains often get their own SKU, which will make comparison difficult. And I don't think that it it is always about included accessories.

Alternatively, sometimes it is about preventing arbitrage. Nobody wants customers to be able to pay $300 at one place and take it back for $400 in store credit somewhere else.

There can be difference in packaging. One ships with just the TV, the other ships with all the cables and accessories.

I've seen that on induction hoods and computer displays. Another trip to the shop to get the missing part that's overpriced.