Mwave offers the iStarUSA 3x5.25" to 5x3.5" SATA/SAS Trayless Hot-Swap Backplane RAID Cage, model no. BPN-350V2-SS-Red, for $54.99 with free shipping. That's the lowest total price we could find by $32. It can accommodate up to five SAS/SATA HDDs and features data transfer rates of up to 6GB/s and two cooling fans.
In the gig economy, baby boomers are out-hustling their younger competition. You can cash in, too.