If 1000 miota = 1 iota
That means $4.25 miota = $4,250.00 per IOTA. is that correct?
If so, that seems like a high valuation for an IOTA.
Is this a coin like XRP where we can expect it to go up in cents and not full dollars?
No, this is not correct, is not miota, is Miota, i.e Million of iota. Price is 4.25$ per million, so 1 Gi (Gigaiota) is 4250$ following your pricing