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It depends on when you are talking about, as far as price increase for powerwall. When I bought them in 2020 they were 6500, now they are 7000 I believe. That price does not include installation.
From tesla direct, yes that is the case currently. You can get powerwall only installs from a third party installer though (or attempt to, if they have product, or you are willing to wait for a while to get them).