Why is there a price for asset safety at all? I guess that is to balance risk and reward.
You can live out of HS/NS stations (not citadels) and never worry to lose anything at all. But perhaps you will be quiet poor and/or bored. Or you can live in Null and make a fortune, but that comes at the risk of losing 25% (EDIT is is even only 0,5 -15%) percent to asset safety when you/your team screws up. Or you can live in a WH like me and make a fortune fast but at the risk to lose EVERYTHING when evicted.
I try to keep my assets liquid as my ISK don’t care for evictions. If I was in Nullsec I would try to have at least 1/3 of my assets in ISK or PLEX. Just contract the stuff you don’t need for a haul to jita and dump it to buyorders. Don’t mind if you seem to lose a few percent of value, cash is always worth more than stuff stuck in space. Too late for that now, but maybe next time…
Now on the problem that the asset safety seems to be too expensive compared to market prices: You need to add some examples or all we can do are wild guesses. Maybe you paid the average price, then the fire-sales kicked in and ruined the prices?
Anyway: Sell when you can, not when you must. That one is always true. I have all my stuff in the part of the game that was design for sovereignty wars and we are not the top dog around - what could probably go wrong? When joining the goldrush don’t store the nuggets you found under the blanket in your tent, doh!