The highest resolution of the Epson EB-Z10005U is WUXGA (1920x1200). That's over two times the resolution of the most common native projector resolution of WXGA (1280x800). Across all comparable spec data projectors that have been available for around the same time as the EB-Z10005U the best resolution is DCI 4K (4096 x 2160) and the worst is nHD (640x360).
There are a number of alternative projectors that have a resolution of WUXGA (1920x1200) currently available that you might want to look at including the Panasonic PT-DW11 ($19,999.00) which is cheaper.
If the resolution of this projector is not high enough for you then you might want to consider the Sony VPL-VW1100ES ($24,166.99) (DCI 4K (4096 x 2160)) which is also higher rated.