The link you followed will bring you to this page:

http://it.aliexpress.com/item/6-29-lot-20pcs-lot-5x7-4x6-3x7-2x8-cm-Pcb-Double-Sided-Copper-Prototype-Universal/32327790171.html?ws_ab_test=searchweb201556_3_79_78_77_80,searchweb201644_5,searchweb201560_1