Christopher Vourlias When the creative team behind Prime Video’s splashy fantasy series “The Wheel of Time” began scouring the globe for locations five years ago, it ran into a problem not uncharacteristic of that period of peak TV: It was all but impossible to find a production hub that could both accommodate the show’s sprawling footprint and meet its exacting technical requirements, with studios from Atlanta to London to Budapest booked year-round. The producers ultimately chose the Czech Republic, a country with a rich cinematic history, a competitive 20% cash rebate, skilled crews and a reputation for servicing foreign blockbusters at a fraction of Hollywood or U.K.