T-Mobile offers its T-Mobile Prepaid Phone SIM Card Activation Kit for $15. Coupon code "SIM99" cuts that to 99 cents. With free shipping, that's tied with our mention from three weeks ago and the lowest total price we could find now by $6. These SIM cards allow you use compatible unlocked phones on the T-Mobile network.
Also available is the T-Mobile Prepaid Nano Sim Card for 99 cents with free shipping via the same coupon.