You should be able to get a better deal on one that's already in the dealers inventory. I sold my 18 Raptor back in Jan and ordered a F350 Sport/Tremor. F350 arrived in March and I missed the Raptor.
Was going to order a 20 at invoice, however I purchased one out of their inventory for invoice minus holdback. Couldn't beat that deal at the time.
Folks claiming to get $13K off, I would like to see their buyers order. I posted my exact numbers on another thread, but this is close. MSRP was $73,600 and invoice was $69,100. Holdback was approx $1,885. Roughy $6,500 off. Anyone getting $13k off would put the dealer losing money.
Timing has a lot to do with Raptor purchases. Two months ago was probably the optimal time to purchase, now that the plants haven't produced any and dealer lots are getting thin, dealers might hold out on what inventory they have.
Best wishes!