Best answer: As of September 26, 2018, it appears as though the GH5s is Sold Out at all Best Buy stores and warehouses from Compton to Texas don't have any either. Panasonic USA does have inventory. How many, that I don't know. Other retail outlets have stock, so I would guesstimate that Best Buy should be receiving inventory replenishment any day now. I see you posted your question over two weeks ago, and you quite possibly already have made your purchase. I'm just a Panasonic fan who has been n the business for too many years and I know how thing roll. If I could drive up to Cypress, CA to Panasonic in Irvine and get you one, I would, but I would have to get at least 30 more just for San Diego to temporarily fill the want gap. Including mine.
Honestly, it could be days or it could be weeks depending on allocation. Check with your local Best Buy Camera department and also touch base with the store manager and let him or her know of your intention. I have a great rapport with Ernesto in Photo and Karim the manager, and we are all on the same page for when stock comes in. Nobody is jumping ahead, its all fair and square, and they know who's been waiting the longest.
I hope this has helped. Terry
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