thats not respect, because standard is usually a 1:1 ratio in dollar to cash shop currency in most games. meaning $20 gives you 2000 of x currency or more. LoL for example you get 2600 points + a 200 bonus. most of their bundels are 2600, skins 1300, and legendary skins 1800. so basically you only have to buy once to get most items you want from the cash shop there and its actually more than fair of a deal. as far as MMOs go, tera also has good deals on their cash shop currency. if you spend $20 you get 2000 + a 10% bonus so 2200. you are getting a 1:1 ratio PLUS a bonus.
now lets