eduard and flightpaths makes 1/48 us modern carrier decks, but I think they are of the printed hard-card type. So depending on your requirements they may not fit, but are only around $10.
if you want to print your own, you can try this link over at ARC http://www.arcforums.com/forums/air/index.php?showtopic=171755&st=60
Tom Modelworks makes PE tie downs for around $15 or so if you want to build your own deck from scratch and just add the tie-downs, as those would be much more difficult to scratch build.
JustPlaneStuff makes one in resin, but its in the $30+ range, I don't know if thats over your budget.