Looking at the maths, this has the potential to be quite a lucrative deal for the first 500 customers. The following is based on the cheaper vegetarian option of £80, rather than the more expensive £100 box
Box Price: £80
Free Sparkling wine: £30
Free Feastbox: £27 (at full price)
BA Voucher: £20 (based on being redeemed at minimum spend)
TCB: £9.25
Total value of add ons: £86.25
Ok, I know some would not pay £30 for the wine, or buy a box for £27, but it is worth thinking about.