Bit difficult to recommend somewhere when the only indication of what you want to buy is 'not a tv' if you just want to burn some cash then I've got some land in Florida, a bridge in London and a scottish lairds title you can have cheap at the end of the month...
Seriously though I'd truly avoid any physical shop in the USA or UK during black Friday / cyber Monday if you do decide to go ensure your car, health and life insurances are paid up and cover any of the outlandish things people are willing to do to get last years mid range tv for 20% off.