Checking Stat Maxes On Items

So, often on the trade market, people are always saying stuff like "2% off max walk speed Aries!", and the items with closer to max identifications usually sell for a lot more. However, I am not sure how you would check such a thing.

I've heard some things, but I checked them this morning, and it confused me, and I was looking for clarification.

Thanks in advance!

 

Check the item guide, and find the average ID for the item. Multiply that by 1.3, and then you get your max ID.

(psst, refer to the post above)

 

1= Average IDs

Positive IDs: 0.3-1.3
Negative IDs: 0.7-1.3

Timing an average ID by 1.3 will give the max results for an ID.

 

It follows standard rounding rules btw

 

Thank you everyone for the answers!