About €2,000 for the frame alone. About €5,000 for the finished bike with a power meter, wheels, pedals... ready to race.
Regarding the UCI sticker, this retailer doesn't apply them.
However, I’ve ridden several UCI Time Trials with a TT frame without the sticker and never had any issues.
The officials checked weight and geometry, specifically: saddle setback, distance from saddle tip to extension tips, and the distance from the pads to the end of the extensions.
A commissaire explained to me that the sticker simply certifies that the frame shape meets the regulations; without the sticker, they just have to manually verify the geometry to ensure it complies