Be careful of deals that look too good to be true.
Best to not pay in advance to a seller that you do not know.
Verifying the item in person is still safest if possible.
More safety tips here.
Shimano 105 R7000 Crankset 52/36T , Arm 170mm
With the 105 R7000 Chainset, Shimano has found the perfect balance between weight, efficiency and comfort without sacrificing stiffness or power-transfer. It has been optimised to ensure the maximum power-transfer from rider to road is achieved and thanks to modern technologies, they have achieved a wider gear pitch so it is fully compatible with standard road frames and the modern 135mm O.L.D. spaced Disc Brake frames. This crankset design pushes advancements in modern drivetrain performance and provides levels of efficiency and comfort that until now have not been achieved.