i think u can find i better price than that. i remember seeing a kit like that, maybe even more in it for 40 bucks. now remember if u just get the zainos kit it wont be enough. and if u just that that PS1S it wont be enough. u have to find compinations.
If you want to get the best shine, for the cheapest price, consider this combination.
I know that your bimmer is not a dialy driver, its your toy so I am gussing there are not alot of scratches and swirls soo you can skip using abrasive polishes. like the 1Z ultra pant polish followed by 1Z paint polish, and go stright to this..... http://autopia-carcare.com/kus-kla-10.html http://autopia-carcare.com/kus-kls-gla.html http://autopia-carcare.com/p21-127.html
that will give u a veryy nice a deep shine. Start of with the AIO, you can do two coats of that back to back. After that you can do the SG. U can put more than one coat on but u must wait 24 hours. I Would put 2-3 coats on. Then u can move on to the P21S Carnauba Wax which is a great finishing toping! To maintain your newly shinning car you can use
sonus acrylic spirtz which is just like a quick detailer http://autopia-carcare.com/son-200.html
another good thing about AIO is that it can be used to polish your rims afteer you clean all the brake dust of with your favoite wheel cleaner!
i dont know if you have an orbital or not so u can just use an applicator pad and a buffing towel to do your work http://autopia-carcare.com/vk-101.html
You can get some MF towels on the autopia site if you want or u can do what i did. I just bought the councord buffing towel from there ( best used as a quick dealing towel plus u get a discount on that towel when u buy AIO) and get the rest of your MF towels ( for buffing and anything else u need) from http://www.exceldetail.com/excelpage4.html
this is just a suggestion, you can always go the zainos way if you like, i was going to but after reading I changed my mind. you can use a number of different things that will go along with zaions, take a look at this artical and see what u think http://store.yahoo.com/autopia/zaino.html
hope this helps!!!