In light of today's news of the tariffs absolutely screwing America and their Console pre-orders being delayed due to adjustments in pricing, some people are speculating that prices may rise in other regions for Nintendo to recoup loss sales.
If we've placed an order (or especially if we only put the $50 deposit down at EB) is that price locked in for us?
It's not locked in no, as its only a hold payment towards the item and the sale transaction has not taken place. Some companies will honour preordered prices and others will say it is what it is at launch. You always have the option to withdraw/refund your preorder payment and/or price match competitors at time of sale.