I few years back I decided to get out of a couple of periods and to try to reduce some of the lead and other mountains of hobby stuff I have.
Started off right and got a flea market table and sold off a few thousands worth of stuff.  At the end of the day – I still had a couple of thousand dollars worth of good sized 15mm painted armies – average painted by a service (Crusader, Saracen, and NW frontier) and some really nicely painted 25mm Archimedean Persians.
Had someone I gamed with who was a vendor (covers quite a few of the conventions) there and he offered to take to other shows and try and sell them – Had always thought well of him – so indicated what I wanted as a bottom line price, stuck a bunch of business cards with everything I had left over.
However I didnt get anything in writing…
I few month slater he indicated he had sold most everything and had about 15% of what I was expecting after his fee – and stated that – got back an answer was he sold them for what he could – I was stunned but we are a small group – I swallowed and waited – unfortunately a few family health scares and work – I wasnt in touch again for a bit.
Early this summer I went and visited – he claimed not only not to have sold anything else – but had no idea where the remaining things were and then blamed everything from my communication to the paint jobs (yes I still had pictures) – then offered to paint a hundred figures for me versus giving me a check.
After several months of emails with only 1 response not addressing my question or confirming things
I give up – concluding I made a bad decision by trusting him.  To this date I have gotten noting and frankly am not expecting anything.
My recommendation is learn from my mistake and before letting anyone else sell you armies etc =- get it all in writing – terms etc. 
Also wished i had started with a small amount and tested the waters so to speak.
Note I have dealt with quite a few vendors and painters over the years and this is the first issue I have ever had – sad to say.
I do want to say over the years Vendors like Russ, Rudy, Al and many others are top notch and will go back to dealing with known long time vendors
Enough of my rant – Learn from my mistakes
Good gaming