If you're really interested, stay away from online dealers when shopping for these. I bought mine 6 years ago, and initially looked at the ones on springboards&more. You can find them cheaper.
I would recommend calling a bunch of gymnastics distributors around you and asking them. After talking to a bunch of gym suppliers, I eventually found mine for 2800(ish) shipped. 7x14 yellow Aussie mat, springs, and pads.
Other tips since you probably don't know much about flybeds:
-Yes, mat quality will make a difference, but another important thing to ask about is whether it's an indoor/outdoor mat. The best mats aren't made to be left outside, and will deteriorate quickly under the sun/rain. You'll want to make sure your mat is good for outdoor settings before you invest a lot of money in it. A little bounce will be sacrificed, but with proper maintenance, a good tramp will last for 20+ years.
-GET THE BEST SPRINGS YOU CAN. I can't emphasize this enough. 10.25 inch springs not only have a larger stretch, they have a completely different elasticity and make a world of difference. Most 10in springs you buy are made for poly (black) mats and give you an abrupt, uneven bounce on a flybed. Good springs are softer and have a smoother bounce that sends you higher with way less stress on your neck and back.
-Most 7x14 frames will work. If you arent sure, get a spring count on them. I was able to save 800 dollars by buying a stock, non-folding frame normally made for a poly bed. This won't make any difference (unless you plan on transporting it a lot) and will save you a ton of money.
-Buy as close you you as you can. These things don't come in a box. They have to be shipped via freight and it will cost hundreds of dollars. When I moved to Utah it cost me 500 dollars to get mine shipped from New York, so the closer you can find one the better. Make sure you factor shipping into your overall price.
-You are going to want to either dig it into the ground, or build a deck around it. The extra bounce means nothing if you're scared shitless of flying off and dying. I'm very good at bouncing (not to claim) and even I'm scared of most dubs with the tramp out of the ground and a 36in drop on either side. The slightest off center landing can send you flying off, so make sure it's as safe as possible. Sounds stupid but I have gotten really hurt a few times.
I could go on and on, but if you are really interested, make the investment! These kids telling you you don't need one don't realize the benefits and probably aren't good enough at jumps for it to really make a difference. I can't think of one other thing that has transformed my skiing more then my trampoline. Air awareness is the most important thing to build, and a trip to whistler won't do that for you.
Good luck, and message me if you have any more questions.