Baseline price for 5L L40 - 45 ES Chest

What is a fair price for a white / crappy 5L L40-45 ES chest?

I've just started with my 1st serious HC character. My L45 wannabe 2xTotem sporker is having some serious deeps problems, so I need to get my hands on a 4-5L. I haven't build up any form of currency yet, however, I do have about 2GCP and around 10 chaos...

Would that be enough to buy myself a 5L? What are baseline 5L prices?

Thanx in advance!