<prompt> Human: Bought a new 2016 Subaru Legacy a little under a month ago. It came with temporary tags. I bought the car from a dealer in Virginia but live in Maryland. Dealer called me 2 days ago and said that they calculated they used the wrong tax rate when they calculated my total price and that I owe an additional 620. Theyre holding my plates hostage; they wont release them until I pay them.I have a final bill of sale. There was no confusion as to the address; my address was the same throughout this entire process. They screwed up; I feel they should eat the costs. I dont have an extra car payment lying around. Does anyone know if I have any recourse?edit: They waited until after I submitted my dealer survey and 2 days before the temp tags are up to spring this on me.  <response>: Offer to return the vehicle to them and cancel the deal if they wont eat the costs. I seriously doubt they would do so over 620. You made a deal. They screwed up. They may or may not be obligated to cover the cost, but if you cant come to an agreement, you may not have to legally keep the vehicle and instead can unwind the contract. If so, Id be quite surprised if they allowed that to occur just to save 620.Note that Im just some random guy on the internet and that you might want to speak to an actual attorney about this. Your local bar association may offer discounted 25-50 consultations in which a bona fide attorney can give you more sound advice for far less than the amount youre talking about. 