Loan player offer

I never used a Loan Offer player to buy them for 3 days for so many tokens (60 or 70 tokens most of the time).
But has anyone did this before, and what is the price of this player (let's say a 8 star player) if you want to buy the player on perminent deal.

If the loan is 60, and the signing fee is also 60, then it might be worth considering it, right ?

Anyone who has experience with this topic?

My 140% loan player from the BVB tour costs 573 Token to sign permanently. For me it's not worth...

I bought a striker on loan too - 140% - turns out he couldn't hit a cow's arse with a banjo - no guarantees he's gonna be any good and expensive lesson :-(