Making things more expensive is the whole point of raising the interest rates, because you are absolutely right in that it is going to affect purchases going forward of toys that typically need loans. This will put downward pressure on the pricing of all those expensive toys, homes, vehicles, etc, etc.
I think we all know sales staff who like to push the sale by saying "It's only $399 a month". Now for the same priced toy, it's going to be $450 (I'm taking liberties here with the actual numbers). So in order for someone who only has $399 in their monthly budget for a given item, the asking price is going to have to come down to stay in the same monthly budget.
As to how much this affects the overall market? Good question, but I think we are going to continue to see interest rates rise until the govt tamps down inflation to an acceptable level.