No, it won't affect your ping times or enhance online gameplay at all.
When you say "speed" here, you're only referring to the speed of the download or upload in terms of how long they take in relation to the size of the file. What's being referred to is bandwidth, or throughput, meaning how much data can be transmitted in a given time.
Ping time refers to how long in time it takes one packet to travel to its physical destination. One packet is a very small amount of data, so small its insignificant in terms of bandwidth.
Online gaming doesn't use much bandwidth. Back in the days when modems were common, at Air Warrior we found that people could throttle their 28k or 33k modem's bandwidth back to 19k or even 14k to improve the stability of their game connection (less warping and tendency to disco).
The only thing this $10 will get you is the ability to upload files in less time.
culero
