just before you fall for a trap dozens other returning players have with their dope items: the broad sword is a KILLER it will likely fetch 2000a+ which is about 100000ecto. Or maybe way beyond that. so don't think a pm with a 300a offer seems too good to wait any further - put it for auction, take your time and claim the profit yourself that else someone reselling will take. no one can really tell you its value, one like it hasn't sold in many MANY years, many people love the skin and many have a shitload of arms laying around.
Most of the times „returning” players sell arms for $ and then quit again 🥲