limited availability (only the Silver version is available at Newegg only, or you have to buy direct through Aliexpress), AND

the fact that it has a single PCI-E slot for a low-profile GPU, AND

the fact that it supports only internal power supplies to be used with an external brick, AND

the fact that, well, it's just an old OTC design that no enthusiast would pick over a custom/niche design

OK, this Realan E-i7 case has been around for at least 5 years, and it seems to (have) be(en) quiet popular as an HTPC. It is however under the radar among the SFF community due toWell, in any case, it fit my use case and bill perfectly, and much better than I had anticipated. The bill part is easy to see, if you're in the US, you can get one for a mere $68. Not bad for a hair-brushed, 2mm aluminum case. I bought it from their main distributor through Aliexpress for $87 shipped to Turkey, where I live.In terms of use case, I'm no gamer, but I tune into some old ones for nostalgia from time to time, and those don't require much GPU muscle. However, I need the CPU horsepower for running some data analytics / simulation / optimization code, so I was hell bent to build on a Ryzen 8-core system. Plus, I needed to carry this system between home&office, it had to be portable, and preferably fit in a 17" laptop bag.To give the specs, the case is 236x245x100mm at 5.78lt, and has a CPU cooler clearance of 77mm edge-to-edge.Before I go into details of why this case ended up better than I expected, I'll give you a full list of what I could fit in there:CPU: Ryzen 1800X ($350, thank you Microcenter)Motherboard: Asrock AB350 ITX ($65, thank you Microcenter)RAM: G.Skill Flare X F4-3200C14D-16GFX ($215)CPU Cooler: Cryorig C1 ($65, thank you Cryorig for sending the AM4 bracket for free all the way from Taiwan)GPU: MSI 1050Ti 4GB LP ($190)PSU: G-Unique ArchDeamon with 2x Dell Ultimate 400W bricks ($255 incl shipping, thank you GuryhwaSSD: Toshiba RD400 256GB m.2 ($115)Fans: 2xNoiseblocker M8-P ($35) and 2xNoiseblocker PC-P 80x15 ($35)Cables: 2xSilverstone slim low profile SATA (for the two 2.5" SSDs I had leftover from the Dell system)Bracket: Phanteks PH-SDBKT_02 for those two 2.5" SSDs ($9)Total: ~$1400 including taxTotal weight: 3.2 kgs ~ 7 lbs (full system incl the case!)What did it replace? A Dell Precision M6800 with Quadro K4100M graphics at 8lbs! Was it worth it? Hell yeah, I was itching to make a custom build for the last 3.5 years, and I sold the Dell for $1350and I now have double the CPU muscle, much better gaming graphics (though obviously no Quadro goodies which I didn't need).Must also note that I already had a big-ass Dell U3415W monitor in the office, and for home I purchased the cheapest 2560x1440 IPS monitor I could find, which was the Lenovo L24q for $170 incl tax.Now, if you're paying attention, you'll see that the GPU I purchased is double-slot, while the case has a single physical slot! Plus, the Cryorig C1 cooler is huge, and still it fit with two 2.5" SSD's! Plus, there are 4x 80mm fans in there along with the 140mm Cryorig fan! How is this all possible??!After the breakPS: No, seriously, I have to go now but I'll be back with pictures, because I would like to showcase how millimetrically awesome this build ended up being. And, no, nothing was a surprise actually... I made detailed measurements before I was sure it would all fit