Welcome to NP
Does the sbj mean anything? You cant add 3 random letters to a word and expect it to have value.
My advice to anyone new to domains is to read this forum for a few months before buying any names. Read and read some more until you understand what makes a domain valuable
Try and focus on a subject you are familiar with, this does help
Check out namebio.com and DNJournal.com to see some recent sales