UDP DoS: I can write that in 5 min
TCP SYN DoS: I can write that in 5 min
RUDY: This is a free tool.
ARME: Its just slowloris, which is a free script.
Email bomber: There are free ones EVEYWHERE
SMS Bomber: iPwN (free) has sms_bomb.py, a free text bomber script.
Proxies: There are hundreds of sites that do nothing but list proxies for free
There you go. I just saved you $7 a month