If the lowsec pirate hangs at the station and the buyer comes in a small fast ship he can get into station and create another auction at a lower price then destroy his cheap ship and clone back to Jita. The winner is not required to move the item he wins…
That aside it will learn people -who for some reaon buys stuff they cannot afford to loose- to use the (location)filters.
I would reccomend you start a hauling service on your alts as you will make much more hauling that stuff out and in.
People can see what system the hypernet item is in. Most people wouldn’t bid on items in low/nullsec unless they were items that belonged there like capitals. So you loot a wreck, pay hypercores, the hypernet doesn’t complete in 3 days, and you lose said hypercores.
Better to just use the market and have a long term sell order up.