It's painful though, and seems to heavily incentivize "I guess I'll just pay the $12.99/month for Prime again". I just tried 5 different sub-$25 items. 2 day s

It's painful though, and seems to heavily incentivize "I guess I'll just pay the $12.99/month for Prime again". I just tried 5 different sub-$25 items. 2 day shipping was only offered on 3 of them, and varied between $7.99 and $11.44. One day shipping was offered on all of them, but was between $9.99 and $18.89. There are some weird stacking effects on the 2 day shipping option as well - it's not a flat rate or per item rate, but falls somewhere in the middle. It's definitely more expensive the more items you have though.