Most pedantically correct answer is "mu", because the answers are both derivable quantitively from "How many images do you want to train on?", which is answered by a qualitative question that doesn't admit numbers ("How high quality do you want it to be?")
Let's say it's 100 images because you're doing a quick LoRA.
That'd be about $5.00 at medium quality (~$0.05/image) or $1 at low. ~($0.01/image)
Let's say you're training a standalone image model. OOM of input images is ~1B, so $10M at low and $50M at high.
250 tokens / image for low, ~1000 for medium, which gets us to:
Fastest LoRA? $1-$4. 25,000 - 100,000 tokens output.
All the training data for a new image model? $10M-$50M, 2.5B - 10B tokens out.