Here is the best advice I could ever give when dealing with Valuation Partners and any other low-paying, broadcast-ordering AMC. This should work well for you:
Hold your head up high, grow a backbone (if you don't already have one), stand up, and be counted among the many appraisers that refuse to cave in. Use (copy & paste) the following handy reply, which I have set up as an email template:
"Thank you very much for considering ________________ [us] for your appraisal needs. However, we find your proposed fee to be unacceptable for the level of appraisal expertise and service that we provide, or for realistically supporting a professional appraisal practice in our part of the country. I also regret to inform you that we do not entertain 'broadcast' orders for appraisal services. We find the practice to be unprofessional, unacceptable, insulting and disgraceful to not only the appraisal profession, but the banking profession as well. Please remove our contact information from your system immediately, as we do not wish to be associated with companies with practices and policies such as those that you employ."