How do they do that?

Vista Print sells business cards for the same price that other companies charge for shipping. Does anybody know how they do that? By ‘hiding’ the cost in the shipping fees:

Slow: 21 Days – $9.19
Standard: 14 Days – $13.19
Priority: 7 Days – $17.44
Rush+: 3 Business Days – $29.48

On actual cost of about $1.45.

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