Those are still some rough odds but for the fee of a few bucks is very much worth it.

Somewhat true - and certainly compared to FPPS pool mining

However, compare solo mining odds with low hashrate:

Chance of a block in 1 day @ 2 TH/s: **1 in 2,369,757**
Chance of a block in 1 day @ 14 TH/s: **1 in 338,537**

To "lotto mining" odds in a block party with more hashrate:

Chance of a block in 1 day @ 1,000 TH/s: **1 in 4,740**
Chance of a block in 1 day @ 5,000 TH/s: **1 in 948**
Chance of a block in 1 day @ 21,000 TH/s: **1 in 226**

Source: https://solochance.com