This is a dropshipping website. You are paying extra for them to purchase a product from China and send it to you; you could get that product yourself for cheaper. I have seen that green laser for ~$8 and that blue laser for ~$60.
Keep in mind that even if you buy those lasers from an original source they are not very solid products. The "301" green lasers are notoriously unreliable, same with the "gatling" blue.