I use them all the time in 1 to 3 light setups, so i can recommend the cheap yongnuo rf602 radio triggers that you can buy on ebay. Then you dont need any modern and more expensive cameras or flash. You can use old and cheap flashes and cameras. The only drawback is that you ll have to set things manually, but really, it is not very hard and it is actually intellectually fun. I never use the commander capabilities of my d90. Especially for something like product photos, ttl is really not needed.