They probably had it saved in Favorites? But yes, all Marketplace activity is being done on the forums right now. You should be okay posting as you have more than 10 posts and have been a member for over a month.
2014 Conventions :
Katsucon (Washington, DC) - Megacon (FL) - Colossalcon (OH)
Upcoming costumes : NiGHTS from NiGHTS: Journey of Dreams, Princess Kraehe (anime) from Princess Tutu, and Zidane Tribal from FFIX!