Is there any way to see the total cost of a flight (points + any taxes and fees that must be paid in cash on top of points) for JetBlue flights even if I do not have enough points in my TrueBlue account?

I see there is a return trip from Tampa to London for around 225,000 points. I do not have enough points in TrueBlue to book, and so It is telling me the cost is the 6000 points I have in there plus $2500 or so.

I have enough amex points to transfer in, but do not want to do so if it turns out that the cost will be 225,000 PLUS some large amount of cash to cover taxes fees, etc.

Does anyone know if there is some way to check this? Their Chat support tells me it is impossible.

Thanks!