as a player of about 15 years I have a Martin KilPatrick net that i bought at a local sports store for about 15 bucks. its a clamp and pull type, so the net is tight and stays tight, and is also easy to take down/up. some cheap butterfly's can be had for about $20 bucks they are good quality. Yet, your local Target/Wal-mart will have a $6 rubber Sportcraft that i must say is a great bang for the buck. I would recommend buying some 3 star balls though because the 2 star balls break easily and wear out super fast.
BTW 38 mm balls are no longer used except for recreational play. If you are looking for tournaments we all use 40 mm balls.