I put a $500 deposit down because I ordered so far in advance I wanted to lock the pricing in... which they were willing to do + any discounts (ordered in February and delivered in August.) I had no idea how in demand they would be and didn't want to end up in a Raptor situation (where they are marking them up $10k over MSRP... and getting it...) In the end, didn't do as well as some on here have done, but was happy enough with where I ended up that I can sleep at night... helped that I had good outside financing.
That said, to me the (refundable) deposit is good faith money that you are a serious buyer... and that they are locking in the deal for you and giving you first right to the vehicle... and won't sell it out from under you (had that happen... test drove a 2013 sport... they said would hold without deposit... talked to wife, went back and it was sold. haven't been back to that dealer since....
In the end.. $2k seems excessive for something they are producing so many of... but look at the risk / reward otherwise....