The portable "suitcase" panels are usually pricey and include a solar charger. Do you need that or was the old panel feeding a solar charger separate that you would utilize?
Expect a 100 watt suitcase system with charger to be 200 bucks or more. If you already have the solar charger you might find a couple used panels on craigslist, connect them with a piano hinge, add a couple swiveling legs and make your own. You can also find 50 watt panels on amazon for about a buck a watt. Buy 2 connect them with that hinge etc..The rest of the hardware to make the suitcase and tilt legs shouldn't be much.