I Have Lost One Of My JBL Wave 300 Earbuds, In Need Of One Only!

I am so sorry right now:( One of my JBL Wave 300 earbuds has gone missing, and it has only been two weeks since I purchased them, I was so happy when I got it... I am not sure if it is possible to buy just one earbud, but I do not want my money to go to waste, I saved up big to be able to afford even this pair, and now I am left with one, without the other. Can you please advise me on how I can obtain a replacement for the right earbud, either for a fee or for free? I would greatly appreciate any assistance you can provide. I don't even know if there is people out there who has experienced the same issue, I hope it's not uncommon...