You need a license and other paperwork to sell airsoft weapons in the UK.
Some products right now im not selling as singles. Hence the bulk. Right now most of my sales come from customers asking for something specific. Not always something I have listed. But with time I will expand.
Some of it does come from a UK warehouse. Some directly from China. I see a lot of other airsoft sites out of stock of some of these items. This was I can keep them 'available' to potential customers all the time. Price I list includes shipping and import tax where applicable. So the mark up is no where near 80%. A lot of the photos are shared between products as they ultimately come from the same factory. Some people also do not like using Ali Express. But its all down to personal opinion. I wont always be the cheapest, but hope to have some different products that no one else is selling.
I actually have this exact scope and just sold one to a friend. We both love it and goes well with our setups.