It's hands-down the best value for this level of picture quality. I didn't review the B7A, but
LG says it delivers the same image quality as LG OLED C7P series, which has the best picture I've ever tested. And I believe them. Check out that review for more details.
The only differences between the two are cosmetic (different stands) and audio-related (the B7A lacks Dolby Atmos decoding and has a different speaker configuration). During the sale period the 55-inch C7 will be $200 more, and the 65-incher $400 more, than the B7A. I don't think those differences are worth the extra money to most buyers.
I don't think the price, especially on the 65-incher, will get any lower this year. In 2016 LG announced a similar sale and its pricing never got lower. In fact it increased in price a bit near the beginning of December, according to Amazon price tracker camelcamelcamel.com. That sale had a pretty tight two-week window.
Maybe you've read tales of burn-in on OLED screens and are afraid that your new TV will be permanently scarred by a channel logo, letterbox bars or your FPS HUD. Don't be. As someone with a lot of experience reviewing TVs, I don't think the possibility of OLED burn-in is worth worrying about. If I was spending my own money now to buy a new TV, I would get the B7A. https://www.cnet.com/news/lg-oled-tvs-will-hit-a-new-low-price-for-black-friday-nows-the-time-to-buy/
