I dont understand, in the front page http://www.elecrow.com/services-c-73/
It says...
2 Layer 10 * 10cm Max - 10pcs (Color Free)
This service provides quick and high quality PCB fabrication experience for worldwide hobbyists. In this service, you...
$9.90
... more info
However, this is FALSE ! When you choose a 10x10 board it adds +14$.
maybe I am not understanding something but definately if I read 10x10 board for 9.90 I dont expect to select this board and get a higher price