A. Oh yes there is a major difference between $100 and $10,000. Stealing $2 from a bum vs robbing a liquor store vs robbing a bank are completely different legally.
B. I don't think the FTC is going to get into a major investigation over a few minor fuckups with harddisks. It's not a scam, just a bad drive.
C. It makes more sense for Rackshack to pull the warranty on the drives than just put them in another box. In terms of customer satisfaction, employee time spent, reputation and chargebacks.
D. If there is a problem you should 1. complain/openticket, 2. contact them over the phone, 3. escalate, 4. escalate, and on until you're at the top. If your isp doesn't have an escalation matrix you should consider how important this is to you.
E. If nothing works or you're not satisfied with providers you should switch asap and get on with business.
F. If you'd like to file a complaint with the FTC go here:
https://rn.ftc.gov/dod/wsolcq$.startup?Z_ORG_CODE=PU01