rounding is a guideline and not a hard set rule, from the rules:

Please use common sense to guide you. This also counts for cash/scm sales since the key to cash ratio is also an approximation in the end.

Rule - for all unusuals below 5 keys, rounding to the nearest 0.05 keys is required. No other decimals are allowed.

Rule - for all unusuals 5-10 keys, please round to the nearest 0.5 keys. No other decimals are allowed.

Rule - for all unusuals above 10 keys, please round to the nearest whole key

Guideline - for hats 100-200 keys, please round to the nearest 5 keys

Guideline - for hats 200-1000 keys, please round to the nearest 10 keys

Guideline - for hats 1000+ keys, please round to the nearest 50 keys

Note that its marked as rule for hats < 100 keys. for anything >= 100 keys theres technically no need to round but its probably good practice (eg. incase you miscalculated the mp sale and its off by a couple keys, the rounding should catch that. example here https://backpack.tf/suggestion/6a0f0e2aea9bc6a750061ba1 i miscalculated the key price)

https://backpack.tf/suggestion/5f49cda3f5ee197c1d4430c4 has probably one of the worst ranges ive ever suggested