[Oneill474]

I made a purchased of a vase, using one of those blank checks
The cred card company sends you. But they charged me cash advance fee.
On the purchase. Does that sound right??

[ScottGem]

Yes. Read the fine print on those checks. Using them is considered a cash advance, not a purchase. Generally there is a fee involved.

[Fr_Chuck]

Yes that is what those are, They are not really "checks" and not issued on a bank. They are a request for payment from the credit card company and yes in every case I have see it is considered a cash advance.

So yes in every case I have seen that is how it works