I need 0.0002 OPETH ($0.629552) & can pay with PayPal or any other crypto currency. I pay $3 and all fee's is on me and I can go first.
If you haven't find someone yet, you can just quick exchange it here:
https://sideshift.ai/ltc/ethoptMinimum though is like 10$, which is quite annoying.
I bought it the same way some time ago because I needed some to transfer WLD. You can just buy it for 10$, use what you need and then exchange it again for something you like where the minimum is lower.