4K UHD Blu-ray players tend to cost hundreds of dollars on average, and discs are oftentimes significantly more expensive than their standard 1080p Full HD Blu-ray counterparts. Sony 4K UHD Wi-Fi Blu-ray Player (UBP-X700U) The UBP-X700U is a high-end 4K UHD Blu-ray player from Sony that features Dolby Vision High Dynamic Range (HDR), Dolby Atmos, support for BT.2020 color spaces, and more. Why are 4K UHD Blu-ray players still so expensive? Even putting aside 4K UHD Blu-ray's boutique market position, it's also true that it costs more on average to produce a 4K UHD disc than a standard Blu-ray disc. Personally, I don't expect to see 4K UHD Blu-ray prices come down in the foreseeable future.