now for a real reply ,
were in the same boat as you , when we kit our carpet cleaning vans out from new we get a bill of just over 50k this is all new and the way we want it and after three years there worth 18k-24k if were lucky depending on the miles the van as on ect ect and that's if we can find a buyer , normally we just pull the truckmount out and put in a brand new van and make it go again for three more years to make it pay for itself again
your not going to get a massive amount for it unless you can arrange a payment plan with a third party this would make it easyer to sell and would make it easyer for them to buy over a few years
like with us and our c.c. vans your wash system is great but only better on a very few jobs as 99% of the time you can get the same results with a home made system as you can with your all singing all dancing unit it just takes longer
ive been watching them over the years and the prices are all over the place on ebay from 900-3500k and I see the same ones getting relished time and time again so I gess its luck of the draw