Save Shopping Cart option!

You guys REALLY need to Make it possible to "SAVE" shopping cart. I spent several hours adding items for a complete FPV / Telemetry system, only to come back to place order after trying to add a few more items, and now it's ALL GONE! it should not be that hard to set up to "SAVE CART" under our login profile. because I'm not sure I want to go back through this now.