The amount of entries an item comes with is unaffected by any discounted price.

Let’s say an item at full-price comes with 100 entries.
After the 20% discount, the item still comes with 100 entries.
Tacking on the 40x multiplier, that item is worth 4,000 entries for this Black Friday Weekend only.

TLDR; You’re saving some coin while still stacking the highest amount of entries possible

Plus, if your order is over $150, you’ll automatically have an extra 200 entries added to your purchase.