Saddly mate resale prices are not good due for a couple of reasons
1--New model is now out so everyone wants them not the old ones
2--However little you have used them or how well you have cared for them the new buyer dosen't know that for sure so is taking a chance
So your best bet is to sell them the best price you can get or use them until you have saved up for the new ones
You are more likely to get a better price if you sell them to a friend that knows how you have used them or trusts you enough to believe you
Otherwise I have seen some silly prices on E-bay (High and low)
I would just get out and bock on them mate as when you do get another pair they will do as a spare or to lend to mates when you go out
Good luck
Jason