I got an ultra cheap $18 15-in-one deal at JB hi-fi a while back. Futuretronics one. i haven't seen the exact same one around since, but similar ones i have.
The USB charger cable and Charging Stand (which looks cool) work perfect.
The plastic DS covering thingo is "Ok" but it prevents the DS from closing 100% perfectly, so not ideal.
The Styluses are fine, pretty close to the original, but the tips are slightly different material. I can't say how they affect the screen, because i use a screen protector and i reccomend using one too.
The screen protectors are again "ok" there is two parts to them (two layers) but i only use the first layer as the second layer leaves a gap between the screen and the protector and thus affexts touch screen usage. The protectors wear out fairly easily (scratches), but mine came with a few scare spares which were useful.
Wrist strap worked fine, BUT mine broke one day at the part where material is glued to plastic (but it's not surprising considering i was swinging my DS around on it in the air XD)
DS/GBA game case is reasonable. Unfortunately it only fits normal sized gba carts in it, not lite sized. NDS games fit fine and there is a stylus pocket inside too.
The DS plastic case is fairly basic, also has a pocket, but if your DS has another layer on it it will not likely fit inside.
Overall, most of the stuff was medium or cheap quality, apart from the chargers which work awesome. Game holder is pretty good too.
I'd give my pack about a 7/10 but for the discounted price it was definitely worth it. The packs i've seen around are not identical to mine BTW i don't know all the differences.
I recommend that you make sure you carefully read what you are getting in the pack, and if you are considering a futuretronics pack, maybe don't spend more than $25 on it.