You need to be careful looking for "EATX" cases to fit a 13" wide motherboard like that A lot of "EATX" cases will only accept boards up to about 10.7" wide or so (like some higher-end single-socket enthusiast boards), and thus are IMO incorrectly labeled as EATX compatible.
For example, I believe the Corsair 750D that @Masman8675 suggested would NOT fit the X8DTH-6F. (Also I personally would not recommend a product that would require potentially-warranty-voiding modifications to work with another product, but maybe that's just me.)
True EATX is 13" wide, which is the same size as SSI EEB. The 10.*" boards (and cases compatible with them) should, I think, be labeled something like "ATX+". (BTW, SSI CEB is 10.5", similar to the ATX+ enthusiast boards I mentioned.)
Anyway, here's a USA-based (cause I don't see your location / country in your profile) pcpartpicker list, filtered to show cases with at least 1x 5.25" bay, compatible with SSI EEB, and filtering out ones without prices.
The cheapest one I see is the $100 Rosewill Rise. The Phanteks Enthoo Pro TG is $4 more, and if I was looking for a case like that, it's probably the one I would be more likely to get.