I want to buy 25csc for sp, but I can't make a trade with sp.

I think you need to offer the sP on one of their trades and they'll offer the csc on one of your trades, so there is some risk involved.

Oh. Dang.

You can buy an item that has a pretty stable fast resale value (like wiz tokens), and use that as your trade. Have them offer on that trade. Much less risk.

Oh, thank you!

No problem! If you've got a nice buyer/seller it can be even easier, just buy something of 25CSC value (in sP obv) from their wishlist or something. There's options, just no direct sP/CSC trading :)

Actually that's not entirely true. You can DEFINITELY trade sP for CSC. If you have CSC you can use it to buy a CSC credit card from the CS shop. These are in increments of 100, 250, 500...etc. The smallest amount for a card is 100. Right now I think they run around 8.5mil for one. You can buy one of these cards or trade for them with sP or other items.