Alloy5109 Nickel Plated Steel Polymer Treated Round Wound?

Are you talking about these? Alloy 5109 Bass Strings from Bass Strings Online

For $20 a set, maybe you can be the one to do a full review on them. Obviously very few people are even familiar with them.

 

Here's a thread from 3 yrs ago: First Impressions: Sfarzo 5109 Alloy roundwounds

 

I just did a general google search by entering "talkbass sfarzo 5109".