The Bundled Perk Value Calculator

Carriers like T-Mobile bundle perks such as 12 months of DoorDash DashPass (normally ~$9.99/mo). But a perk's sticker value and its real value to you are different numbers. Drag the 3D scene, move the sliders, and see both coin stacks react.

Real annual value to you$0
drag to orbit • pinch/scroll to zoom

Your habits

$0
net value over the 12 free months

The math

Sticker value = 12 × $9.99 = $119.88. Real value = (orders × fees saved) − (induced orders × induced spend) per month, × 12. A perk you wouldn't have paid for is only worth what it actually saves you.

Why carriers do this

Perks reduce churn. If a bundled benefit keeps you from switching carriers for even 3 extra months at ~$70/mo ARPU, the carrier earns back far more than the wholesale cost of the perk, which is heavily discounted below retail.

Induced demand

"$0 delivery fees" nudges people to order more. Each extra order you wouldn't otherwise place is a cost, not a saving. Behavioral economists call this the flat-rate bias — subscriptions make marginal costs feel like zero.

Checklist before activating

1) Would you have bought it anyway? 2) Does it auto-renew at full price after 12 months? 3) Set a calendar reminder for month 11. 4) Compare against the cash discount you could negotiate instead.
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