I have come to this place three times to register and get a plate for three different trailers for my company. Every time I come in it's a different price. First time $120 second time $179 third time $849. Are you kidding me? I will never come here again. This place has the worst customer service possible. Don't waste your time. Oh yeah did I mention that all 3 trailers are identical in size and weight and price, but for some reason there is a discrepancy on the cost of the plates/registration, to the tune of $700. Especially loved how the lady got super defensive and told me the other people did it wrong.
Update 12/15/17:
I went to the DMV on Greenfield and US 60. They told me that the person at Third Party MVS was trying to register the trailer as a commercial trailer over 10,000 pounds. This is why it was so expensive. However this trailer is only 3000 pounds. It cost me $62.20 to register for 1 year and get a plate for this trailer at the DMV. There was also no wait and I was actually in and out in less than 30 minutes. Bye bye, Third Party MVS. Never again.