Cs2, vac update, skin prices.

I don't know about the general market, because honestly, I'm new to CS. But I bought a M4A1-S Nightmare like 10 days ago for like $11.50 and I checked the market for those today and they are selling for $14.40. Sure it's only like $3 more, but percentage wise that's a substantial increase of like 25-30 percent in less than 2 weeks.