Ahh, these are the best, folks with money -- discretional money -- to spend.
Sure, you can do it without "selling out." There isn't anything that says affiliate sales has to be done with blinking banners. A few tasteful buttons here and there can target the casual visitor. If you can honestly recommend a product or two (or three or four or more), then that's a plus.
Best advice: Most of the folks in high-priced hobbies still subscribe to (Can you believe it?) magazines. Pick up a few in your niche. Page through them to see how ads are placed against editorial copy. Also, check out what other products or services are advertised to get an idea what advertisers are spending money on to target your demographic. These "supporting" campaigns might be worth a button in a sidebar. If nothing else your site visitor should feel he or she is in comfortable territory. And don't forget the small "back of book" ads; I sometimes get some very good, even surprising, ideas from these pages.