price of survey of property that's under legal administration

 HI all, 

Hoping someone can help with this one. 

The background as brief as I can make it is that we put down a large deposit in 2005 for an apartment, offplan. Due to the copletion being several years late (althugh eventually completed), we took the developers to court and won. They appealled twice and we won both times. However, the developers then became insolvent in 2000. 
We were very grateful that the solicitor/barrister managed to win our case all three times but now we wonder if we are being taken for a ride. The solicitor has said that he has been called to attend the various meetings and because this is all happenining in the Canaries and we are on a different island to where the case is, he has to fly the 25-minute journey over, but asks us for 500 - 1000€ each time. 
We've told him we can't keep on paying this and he has agreed that he won't go any ore and won't ask us for any more money. 

Now he is asking us to pay for a tecnico to value the apartment, and again wants a lot of money. I'm wondering a) is this really our responsibility to pay and b) how much should it be. 

I'd be grateful for any imput.

 Perhaps I can re-word this as I'm fairly desperate for a reply!

With the construction company where we placed deposits on apartments off-plan  in liquidation, our solicitor has asked us to pay for a tecnico to value the apartments. We have already won our court case for the return of monies but it doesn't sound correct that we have to pay 1k for the tecnico to value the apartments. 

Surely, we are owned what we are owed. OK, we might well not get all or even any of it, and we realise that the eventual outcome is affected by how much the apartments are sold for (probably cheaply at auction), but don't know why it is up to us to pay for the valuation. 

Any thoughts please?